diff --git a/cs/dso/Cr/Cr121.md b/cs/dso/Cr/Cr121.md index 50a710659..da1859819 100644 --- a/cs/dso/Cr/Cr121.md +++ b/cs/dso/Cr/Cr121.md @@ -5,7 +5,7 @@ references: created_by: 8mag created_date: 2020-09-23 20:52:09.111272 updated_by: skybber -updated_date: 2021-01-09 10:07:13.555047 +updated_date: 2022-02-05 18:37:47.120402 --- -![<]($IMG_DIR/dso/Cr121.png) +![<]($IMG_DIR/dso/Cr121.jpg) Otevřená hvězdokupa vhodná spíše pro triedr jako dalekohled. \ No newline at end of file diff --git a/cs/dso/Cr/Cr121_200u250.md b/cs/dso/Cr/Cr121_200u250.md index a98259bb8..483cee06c 100644 --- a/cs/dso/Cr/Cr121_200u250.md +++ b/cs/dso/Cr/Cr121_200u250.md @@ -4,6 +4,6 @@ rating: 1 created_by: skybber created_date: 2021-01-09 10:07:13.303600 updated_by: skybber -updated_date: 2021-01-09 10:07:13.555255 +updated_date: 2022-02-05 18:37:47.120574 --- -Je extrémně velkou skupinou 20 hvězd, ne dobře rozlišitelných od hvězdného pole. Její 5 nejjasnějších hvězd tvoří zkřivený řetězec s hvězdou ο1 CMa (3,79mag) na severním konci. Wolf-Rayetových proměnná hvězda EZ Canis Majoris, hned severně od ο1 CMa, je pravděpodobně skutečným členem kupy. +Je extrémně velkou skupinou 20 hvězd, ne dobře rozlišitelných od hvězdného pole. Její 5 nejjasnějších hvězd tvoří zkřivený řetězec s hvězdou ο1 CMa (3,79mag) na severním konci. Wolf-Rayetových proměnná hvězda EZ Canis Majoris, hned severně od ο1 CMa, je pravděpodobně skutečným členem kupy. diff --git a/cs/dso/Cr/Cr140.md b/cs/dso/Cr/Cr140.md index 615bded77..7f5efc281 100644 --- a/cs/dso/Cr/Cr140.md +++ b/cs/dso/Cr/Cr140.md @@ -5,10 +5,10 @@ references: created_by: 8mag created_date: 2020-09-23 20:52:09.103702 updated_by: skybber -updated_date: 2021-01-09 10:08:17.710722 +updated_date: 2022-02-05 18:51:13.287305 --- -![<]($IMG_DIR/dso/Cr140.png) -Velmi rozsáhlá otevřená hvězdokupa viditelná pouhým okem jako matná skvrnka v Mléčné dráze. Označuje "chlup" na konci ocasu Velkého psa. V dalekohledu se jedná o kostru velkého seskupení "Y" sestávajícího ze čtyř hvězd 5-6mag, které jsou mírně vysunuté z kupy na SV. Prostřední hvězda "Y" má označení Dunlop 47. Jde o širokou modro-žlutou dvojhvězdu, jejíž složky jasnosti 5,5mag a 7,6mag jsou odděleny 99". Celá tato oblast stojí za binokulární procházku. - - - +![<]($IMG_DIR/dso/Cr140.jpg) +Velmi rozsáhlá otevřená hvězdokupa viditelná pouhým okem jako matná skvrnka v Mléčné dráze. Označuje "chlup" na konci ocasu Velkého psa. V dalekohledu se jedná o kostru velkého seskupení "Y" sestávajícího ze čtyř hvězd 5-6mag, které jsou mírně vysunuté z kupy na SV. Prostřední hvězda "Y" má označení Dunlop 47. Jde o širokou modro-žlutou dvojhvězdu, jejíž složky jasnosti 5,5mag a 7,6mag jsou odděleny 99". Celá tato oblast stojí za binokulární procházku. + + + diff --git a/cs/dso/NGC/1800-1900/NGC1893.md b/cs/dso/NGC/1800-1900/NGC1893.md index ddbfe2f64..b4c21b9a5 100644 --- a/cs/dso/NGC/1800-1900/NGC1893.md +++ b/cs/dso/NGC/1800-1900/NGC1893.md @@ -1,11 +1,10 @@ --- name: -rating: 8 +rating: 6 references: created_by: 8mag created_date: 2020-09-23 20:52:02.730235 updated_by: skybber -updated_date: 2020-11-04 12:39:17.768028 +updated_date: 2022-02-06 16:11:28.078300 --- -![<]($IMG_DIR/dso/NGC1893.jpg) Otevřená hvězdokupa celkové jasnosti 7,5mag, tvořená 60 hvězdami, z nichž nejjasnější dosahuje 9,31mag. Je pozorována uvnitř trojúhelníku, který tvoří hvězdy 8mag. Hvězdokupa je umístěna ve velmi bohatém hvězdném poli a je ponořena v emisní mlhovině **IC 410**, která je bez mlhovinového filtru velmi těžko pozorovatelná - zjevuje se slabá, velká a velmi mlhavá. Použítím O-III filtru se ukáže ve tvaru působivého písmene "C", které zabírá zhruba půl stupně. Mlhovina je výraznější na SZ rozhraní kupy. \ No newline at end of file diff --git a/cs/dso/NGC/1800-1900/NGC1893_400u500.md b/cs/dso/NGC/1800-1900/NGC1893_400u500.md index 986b50e6d..3b66ef525 100644 --- a/cs/dso/NGC/1800-1900/NGC1893_400u500.md +++ b/cs/dso/NGC/1800-1900/NGC1893_400u500.md @@ -4,6 +4,6 @@ rating: 1 created_by: skybber created_date: 2020-09-23 20:52:11.146255 updated_by: skybber -updated_date: 2020-11-04 12:39:17.768363 +updated_date: 2022-02-06 15:57:58.237761 --- -V dalekohledu můžeme pozorovat většinu členů hvězdokupy NGC 1893 - 50 v rozmezí 9-13mag. Největší koncentrace je pozorována v severní části ve tvaru jakéhosi "diamantu", se dvěma rozšířeními na severu a východě, probíhajícími další tři tucty hvězd. +V dalekohledu můžeme pozorovat většinu členů hvězdokupy NGC 1893 - 50 v rozmezí 9-13mag. Největší koncentrace je pozorována v severní části ve tvaru jakéhosi "diamantu", se dvěma rozšířeními na severu a východě, probíhajícími další tři tucty hvězd. diff --git a/cs/dso/NGC/2100-2200/NGC2129.md b/cs/dso/NGC/2100-2200/NGC2129.md index 530a7fa37..0784a1ab0 100644 --- a/cs/dso/NGC/2100-2200/NGC2129.md +++ b/cs/dso/NGC/2100-2200/NGC2129.md @@ -1,10 +1,10 @@ --- name: -rating: 4 +rating: 5 references: created_by: 8mag created_date: 2020-09-23 20:52:04.509601 updated_by: skybber -updated_date: 2021-01-09 15:10:52.708965 +updated_date: 2022-02-05 19:24:57.468322 --- -![<]($IMG_DIR/dso/NGC2129.jpg) +![<]($IMG_DIR/dso/NGC2129.jpg) diff --git a/cs/dso/NGC/2100-2200/NGC2129_100u150.md b/cs/dso/NGC/2100-2200/NGC2129_100u150.md index c58834da8..85e596158 100644 --- a/cs/dso/NGC/2100-2200/NGC2129_100u150.md +++ b/cs/dso/NGC/2100-2200/NGC2129_100u150.md @@ -4,6 +4,6 @@ rating: 1 created_by: skybber created_date: 2021-01-09 15:10:52.323145 updated_by: skybber -updated_date: 2021-01-09 15:10:52.709232 +updated_date: 2022-02-05 19:24:57.468473 --- -V dalekohledu nad 150 mm a při 100x zvětšení se zobrazí poměrně jasná, kompaktní, malá hromádka. Tvoří ji pět hvězd 10-11mag, deset 12mag a pár tuctů slabších, které jsou koncentrované kolem dvou nejjasnějších členů. kupa je rozdělena do dvou nepravidelných hvězdných řetězců. +V dalekohledu nad 150 mm a při 100x zvětšení se zobrazí poměrně jasná, kompaktní, malá hromádka. Tvoří ji pět hvězd 10-11mag, deset 12mag a pár tuctů slabších, které jsou koncentrované kolem dvou nejjasnějších členů. kupa je rozdělena do dvou nepravidelných hvězdných řetězců. diff --git a/cs/dso/NGC/2100-2200/NGC2141.md b/cs/dso/NGC/2100-2200/NGC2141.md new file mode 100644 index 000000000..7b54b9c9d --- /dev/null +++ b/cs/dso/NGC/2100-2200/NGC2141.md @@ -0,0 +1,10 @@ +--- +name: +rating: 1 +references: +created_by: skybber +created_date: 2022-02-06 13:45:20.320007 +updated_by: skybber +updated_date: 2022-02-06 13:45:21.247898 +--- +Leží něco přes 3/4° severně od Mu Orionis a vyžaduje malé zvětšení, aby byla vůbec vidět. V jejím středu je slabá hvězda a několik dalších na jejím okraji. \ No newline at end of file diff --git a/cs/dso/NGC/2100-2200/NGC2141_400u500.md b/cs/dso/NGC/2100-2200/NGC2141_400u500.md new file mode 100644 index 000000000..881441a9e --- /dev/null +++ b/cs/dso/NGC/2100-2200/NGC2141_400u500.md @@ -0,0 +1,9 @@ +--- +aperture: 400/500 +rating: 1 +created_by: skybber +created_date: 2022-02-06 13:45:21.021300 +updated_by: skybber +updated_date: 2022-02-06 13:52:03.344941 +--- +20-25 slabých hvězd mag 13-15 při 220x nad rozsáhlým zjasněním. Nachází se v neúplném kruhu několika jasnějších hvězd 11-12 mag o průměru asi 8'. \ No newline at end of file diff --git a/cs/dso/NGC/2100-2200/NGC2158.md b/cs/dso/NGC/2100-2200/NGC2158.md index 473a6a09f..fd5e20ad7 100644 --- a/cs/dso/NGC/2100-2200/NGC2158.md +++ b/cs/dso/NGC/2100-2200/NGC2158.md @@ -5,7 +5,7 @@ references: created_by: 8mag created_date: 2020-09-23 20:52:04.520922 updated_by: skybber -updated_date: 2021-01-09 14:47:42.893076 +updated_date: 2022-02-05 19:07:18.360252 --- -![<]($IMG_DIR/dso/NGC2158.jpg) -Otevřená hvězdokupa (8,6mag) nacházející se ve vzdálenosti 11 000 ly směrem k okrajovým částech Galaxie. Je stará dvě miliardy let. Na obloze je slabším společníkem mnohem rozsáhlejší otevřené hvězdokupy M35. Oproti ní však leží v asi 6x větší vzdálenosti. +![<]($IMG_DIR/dso/M035.jpg) +Otevřená hvězdokupa (8,6mag) nacházející se ve vzdálenosti 11 000 ly směrem k okrajovým částech Galaxie. Je stará dvě miliardy let. Na obloze je slabším společníkem mnohem rozsáhlejší otevřené hvězdokupy M35. Oproti ní však leží v asi 6x větší vzdálenosti. diff --git a/cs/dso/NGC/2100-2200/NGC2158_300u350.md b/cs/dso/NGC/2100-2200/NGC2158_300u350.md index a2f509e89..7d04b92dd 100644 --- a/cs/dso/NGC/2100-2200/NGC2158_300u350.md +++ b/cs/dso/NGC/2100-2200/NGC2158_300u350.md @@ -4,6 +4,6 @@ rating: 1 created_by: skybber created_date: 2021-01-09 14:47:42.704192 updated_by: skybber -updated_date: 2021-01-09 14:47:42.893451 +updated_date: 2022-02-05 19:07:18.360485 --- -V dalekohledu je velmi zhuštěnou, bohatou sbírkou slabých hvězd, kontrastní pěkně s jasnější M35. Díky množství hvězd blízko centra má zjev uvolněné kulové hvězdokupy. Oproti mlhavé pozadí můžeme rozlišit 50 hvězd jasnosti 13mag a slabších (na JV rozhraní je hvězda 10,5mag). Několik hvězdných řetězců se šíří z kupy: jeden na západním rozhraní se připojuje na JZ, další se připojuje ze SV rozhraní na východní stranu směrem k M35. +V dalekohledu je velmi zhuštěnou, bohatou sbírkou slabých hvězd, kontrastní pěkně s jasnější M35. Díky množství hvězd blízko centra má zjev uvolněné kulové hvězdokupy. Oproti mlhavé pozadí můžeme rozlišit 50 hvězd jasnosti 13mag a slabších (na JV rozhraní je hvězda 10,5mag). Několik hvězdných řetězců se šíří z kupy: jeden na západním rozhraní se připojuje na JZ, další se připojuje ze SV rozhraní na východní stranu směrem k M35. diff --git a/cs/dso/NGC/2200-2300/NGC2281.md b/cs/dso/NGC/2200-2300/NGC2281.md index 8ab64a748..1a7aa1f02 100644 --- a/cs/dso/NGC/2200-2300/NGC2281.md +++ b/cs/dso/NGC/2200-2300/NGC2281.md @@ -5,7 +5,8 @@ references: created_by: 8mag created_date: 2020-09-23 20:52:03.241451 updated_by: skybber -updated_date: 2020-09-23 20:52:03.241478 +updated_date: 2022-02-06 20:11:31.717166 --- -![<]($IMG_DIR/dso/NGC2281.jpg) +![<]($IMG_DIR/dso/NGC2281.jpg) +![<]($IMG_DIR/dso/NGC2281a.jpg) Jedna z méně známých otevřených hvězdokup v souhvězdí, skrývající 30 členů z nichž nejjasnější dosahuje 7,3mag. Celková jasnost této výrazné OH je sice 5,4mag, takže je vidět i v triedru, ale neposkytuje příliš působivý pohled ani ve středních amatérských dalekohledech: ukáží se dva tucty volně rozložených hvězd 8-10mag, které tvoří jakési písmeno "U", asi 3.4 stupně JJZ od ψ Aur. \ No newline at end of file diff --git a/cs/dso/NGC/2300-2400/NGC2395.md b/cs/dso/NGC/2300-2400/NGC2395.md index 8230b9404..e5c0c572d 100644 --- a/cs/dso/NGC/2300-2400/NGC2395.md +++ b/cs/dso/NGC/2300-2400/NGC2395.md @@ -1,10 +1,10 @@ --- name: -rating: 4 +rating: 5 references: created_by: 8mag created_date: 2020-09-23 20:52:01.500594 updated_by: skybber -updated_date: 2021-01-09 15:11:38.405415 +updated_date: 2022-02-05 19:25:26.553735 --- -![<]($IMG_DIR/dso/NGC2395.jpg) +![<]($IMG_DIR/dso/NGC2395.jpg) diff --git a/cs/dso/NGC/2400-2500/NGC2439.md b/cs/dso/NGC/2400-2500/NGC2439.md new file mode 100644 index 000000000..318e93f43 --- /dev/null +++ b/cs/dso/NGC/2400-2500/NGC2439.md @@ -0,0 +1,10 @@ +--- +name: +rating: 6 +references: +created_by: skybber +created_date: 2022-02-06 12:08:13.945765 +updated_by: skybber +updated_date: 2022-02-06 12:08:14.422906 +--- +John Herschel objevil NGC 2439 = h3094 28. ledna 1835 a zaznamenal "hvězdokupu asi 150 hvězd, B, pL, p bohatou, ne o moc více koncentrovanou do středu, průměr 8', má jednu hvězdu 8. mag (místo obsazeno), jednu červenou 9. mag, ostatní 12..14. mag.". \ No newline at end of file diff --git a/cs/dso/NGC/2400-2500/NGC2439_400u500.md b/cs/dso/NGC/2400-2500/NGC2439_400u500.md new file mode 100644 index 000000000..830566abf --- /dev/null +++ b/cs/dso/NGC/2400-2500/NGC2439_400u500.md @@ -0,0 +1,9 @@ +--- +aperture: 400/500 +rating: 1 +created_by: skybber +created_date: 2022-02-06 12:07:01.459452 +updated_by: skybber +updated_date: 2022-02-06 12:07:13.839652 +--- +220x, 70 hvězd viditelných v poli 10'. Jasná, poměrně velká, protáhlá na SZ. Bohatá, příjemná hvězdokupa, jejíž součástí je R Puppis 6,7 mag na severovýchodním okraji. Asi 1' JZ a 2' JV od R Puppis jsou dvě jednoduché, ale nápadné dvojhvězdy stejně vzdálené, s podobnými magnitudami, ale s kolmou orientací (N-S a V-Z). Dvojice 1,7' SSV je PRO 41 (9,2/10,3 na 12"). Tyto široké dvojhvězdy tvoří nápadnou skupinu a jsou součástí eliptického obrysu hvězd s prázdnotou uprostřed. Velmi neobvyklý vzhled! \ No newline at end of file diff --git a/cs/dso/NGC/2400-2500/NGC2440.md b/cs/dso/NGC/2400-2500/NGC2440.md index 43d698812..c4eb82d6e 100644 --- a/cs/dso/NGC/2400-2500/NGC2440.md +++ b/cs/dso/NGC/2400-2500/NGC2440.md @@ -1,10 +1,10 @@ --- name: Motýl albínek -rating: 4 +rating: 6 references: created_by: 8mag created_date: 2020-09-23 20:52:03.597395 updated_by: skybber -updated_date: 2020-10-01 17:04:30.340447 +updated_date: 2022-02-06 12:09:02.881830 --- -![<]($IMG_DIR/dso/NGC2440.jpg) +![<]($IMG_DIR/dso/NGC2440.jpg) diff --git a/cs/dso/NGC/2400-2500/NGC2440_200u250.md b/cs/dso/NGC/2400-2500/NGC2440_200u250.md index 552d4b76f..c2056f8c0 100644 --- a/cs/dso/NGC/2400-2500/NGC2440_200u250.md +++ b/cs/dso/NGC/2400-2500/NGC2440_200u250.md @@ -4,7 +4,7 @@ rating: 1 created_by: skybber created_date: 2020-09-23 20:52:12.579804 updated_by: skybber -updated_date: 2020-10-01 17:04:30.340715 +updated_date: 2022-02-06 12:09:02.881982 --- -Nápadný oválný disk nazelenalé barvy uprostřed s nápadným zjasněním. - +Nápadný oválný disk nazelenalé barvy uprostřed s nápadným zjasněním. + diff --git a/cs/dso/NGC/2400-2500/NGC2440_400u500.md b/cs/dso/NGC/2400-2500/NGC2440_400u500.md index ab6c96cc1..1473a5261 100644 --- a/cs/dso/NGC/2400-2500/NGC2440_400u500.md +++ b/cs/dso/NGC/2400-2500/NGC2440_400u500.md @@ -4,7 +4,7 @@ rating: 1 created_by: skybber created_date: 2020-09-23 20:52:12.595322 updated_by: skybber -updated_date: 2020-10-01 17:04:30.340865 +updated_date: 2022-02-06 12:09:02.882050 --- -450x, [OIII] filtr, 6m7 +450x, [OIII] filtr, 6m7 Silně strukturovaná PN. Jasná centrální část ve tvaru písmene U otevřené na JZ. Na JZ a SV přiléhají plošné zjasnění. Další část PN je mírně odsazená ve směru JZ. Zdá se, že krátká a úzká vlákna vytékají z hlavního tělesa ve směru V a SV, vlákna se po několika obloukových sekundách difuzně ztrácí. \ No newline at end of file diff --git a/cs/dso/NGC/2400-2500/NGC2482.md b/cs/dso/NGC/2400-2500/NGC2482.md index 91c7eb8f0..54d4a532d 100644 --- a/cs/dso/NGC/2400-2500/NGC2482.md +++ b/cs/dso/NGC/2400-2500/NGC2482.md @@ -1,11 +1,11 @@ --- name: -rating: 4 +rating: 5 references: created_by: 8mag created_date: 2020-09-23 20:52:03.641671 updated_by: skybber -updated_date: 2021-02-06 10:37:12.197656 +updated_date: 2022-02-06 12:10:09.015077 --- -![<]($IMG_DIR/dso/NGC2482.jpg) - +![<]($IMG_DIR/dso/NGC2482.jpg) + diff --git a/cs/dso/NGC/2400-2500/NGC2482_100u150.md b/cs/dso/NGC/2400-2500/NGC2482_100u150.md index 48d14fc09..a365ab713 100644 --- a/cs/dso/NGC/2400-2500/NGC2482_100u150.md +++ b/cs/dso/NGC/2400-2500/NGC2482_100u150.md @@ -4,6 +4,6 @@ rating: 1 created_by: skybber created_date: 2021-02-06 10:37:11.875371 updated_by: skybber -updated_date: 2021-02-06 10:37:12.197809 +updated_date: 2022-02-06 12:10:09.015232 --- -V dalekohledu skupinka 30 hvězd 10-12mag rozmístěných nepravidelně. Zhuštění naJV a SZ straně jsou spojeny bohatým hvězdným proudem táhnoucím se napříč centrem kupy. Jižně od centra můžeme vidět bezhvězdnu prázdnotu. +V dalekohledu skupinka 30 hvězd 10-12mag rozmístěných nepravidelně. Zhuštění naJV a SZ straně jsou spojeny bohatým hvězdným proudem táhnoucím se napříč centrem kupy. Jižně od centra můžeme vidět bezhvězdnu prázdnotu. diff --git a/cs/dso/NGC/2500-2600/NGC2539.md b/cs/dso/NGC/2500-2600/NGC2539.md index 68c39f4dd..088ae8c06 100644 --- a/cs/dso/NGC/2500-2600/NGC2539.md +++ b/cs/dso/NGC/2500-2600/NGC2539.md @@ -1,10 +1,10 @@ --- name: -rating: 4 +rating: 5 references: created_by: 8mag created_date: 2020-09-23 20:52:01.135566 updated_by: skybber -updated_date: 2021-02-06 10:32:46.399330 +updated_date: 2022-02-06 12:10:40.783397 --- -![<]($IMG_DIR/dso/NGC2539.jpg) +![<]($IMG_DIR/dso/NGC2539.jpg) diff --git a/cs/dso/NGC/3300-3400/NGC3384.md b/cs/dso/NGC/3300-3400/NGC3384.md index 3bd103d25..b97627910 100644 --- a/cs/dso/NGC/3300-3400/NGC3384.md +++ b/cs/dso/NGC/3300-3400/NGC3384.md @@ -5,6 +5,6 @@ references: created_by: 8mag created_date: 2020-09-23 20:52:02.807601 updated_by: skybber -updated_date: 2021-01-19 20:50:42.834163 +updated_date: 2022-02-09 19:00:37.820870 --- -![<]($IMG_DIR/dso/NGC3384.jpg) +![<]($IMG_DIR/dso/M105.jpg) diff --git a/cs/dso/NGC/4100-4200/NGC4173.md b/cs/dso/NGC/4100-4200/NGC4173.md index 79854f92c..8da10af47 100644 --- a/cs/dso/NGC/4100-4200/NGC4173.md +++ b/cs/dso/NGC/4100-4200/NGC4173.md @@ -5,6 +5,6 @@ references: created_by: skybber created_date: 2020-09-23 20:52:02.271900 updated_by: skybber -updated_date: 2020-09-23 20:52:02.271925 +updated_date: 2022-02-09 18:54:27.461400 --- -![<]($IMG_DIR/dso/NGC4173.jpg) +![<]($IMG_DIR/dso/HCG61.jpg) \ No newline at end of file diff --git a/cs/dso/NGC/4100-4200/NGC4173_400u500.md b/cs/dso/NGC/4100-4200/NGC4173_400u500.md index e30c08a2e..112beff11 100644 --- a/cs/dso/NGC/4100-4200/NGC4173_400u500.md +++ b/cs/dso/NGC/4100-4200/NGC4173_400u500.md @@ -4,7 +4,7 @@ rating: 5 created_by: skybber created_date: 2020-09-23 20:52:10.532944 updated_by: skybber -updated_date: 2020-09-23 20:52:10.532963 +updated_date: 2022-02-09 18:54:27.461593 --- -257x, pro 6m3 +257x, pro 6m3 galaxie je největším členem "boxu“, tj člen velmi zajímavého, úzkého galaxiového kvarteta HCG 61. NGC 4173 je nejzajímavější galaxie z ní, i když je nejslabší. \ No newline at end of file diff --git a/cs/dso/NGC/4200-4300/NGC4214.md b/cs/dso/NGC/4200-4300/NGC4214.md index cd913436c..160bfb681 100644 --- a/cs/dso/NGC/4200-4300/NGC4214.md +++ b/cs/dso/NGC/4200-4300/NGC4214.md @@ -1,10 +1,10 @@ --- name: -rating: 4 +rating: 6 references: created_by: 8mag created_date: 2020-09-23 20:52:05.804266 updated_by: skybber -updated_date: 2020-09-23 20:52:05.804299 +updated_date: 2022-02-09 18:45:49.834709 --- -![<]($IMG_DIR/dso/NGC4214.jpg) +![<]($IMG_DIR/dso/NGC4214.jpg) diff --git a/cs/star/Supernova_z_roku_1006.md b/cs/star/SN_1006.md similarity index 78% rename from cs/star/Supernova_z_roku_1006.md rename to cs/star/SN_1006.md index 9d82eec1b..c362d57d6 100644 --- a/cs/star/Supernova_z_roku_1006.md +++ b/cs/star/SN_1006.md @@ -1,9 +1,9 @@ --- -name: Supernova z roku 1006 +name: SN 1006 constellation: Lup created_by: 8mag created_date: 2020-09-23 20:52:21.938732 -updated_by: 8mag -updated_date: 2020-09-23 20:52:21.938750 +updated_by: skybber +updated_date: 2022-02-07 15:57:15.999122 --- -v souhvězdí v minulosti vzplanula nejjasnější zaznamenána supernova v lidských dějinách. Všimli si ji tak obyvatelé Číny a Japonska, jakož i Blízkého východu a Evropy. Když se na jaře v roce 1006 poprvé na obloze objevila, byla asi tak jasná jako Mars v opozici. Během několika týdnů však hravě překonala Venuši a zjasnila se až na -9,5mag, což odpovídá jasu Měsíce v první čtvrti. Supernova byla viditelná následující dva roky, na krátký čas dokonce i přes den. Dnes na tomto místě pozorujeme už jen mračno trosek po dávné hvězdné explozi. \ No newline at end of file +v souhvězdí v minulosti vzplanula nejjasnější zaznamenána supernova v lidských dějinách. Všimli si ji tak obyvatelé Číny a Japonska, jakož i Blízkého východu a Evropy. Když se na jaře v roce 1006 poprvé na obloze objevila, byla asi tak jasná jako Mars v opozici. Během několika týdnů však hravě překonala Venuši a zjasnila se až na -7,5mag, což odpovídá jasu Měsíce v první čtvrti. Supernova byla viditelná následující dva roky, na krátký čas dokonce i přes den. Dnes na tomto místě pozorujeme už jen mračno trosek po dávné hvězdné explozi. \ No newline at end of file diff --git a/cs/star/Struve_2303.md b/cs/star/Struve_2303.md index d90e33502..ccba99486 100644 --- a/cs/star/Struve_2303.md +++ b/cs/star/Struve_2303.md @@ -4,6 +4,6 @@ constellation: Ser created_by: 8mag created_date: 2020-09-23 20:52:21.458340 updated_by: skybber -updated_date: 2020-09-23 20:52:21.458365 +updated_date: 2022-02-08 15:29:35.728179 --- -těsná dvojhvězda pozorovaná v poli Mléčné dráhy popredkávanom tmavými mlhovinami. Složky 6,6mag a 9,1mag v odstupu 2,1" jsou velmi dobrým testem kvality pro malé dalekohledy a potřebují minimálně 150-násobné zvětšení. \ No newline at end of file +těsná dvojhvězda pozorovaná v poli Mléčné dráhy protkaném tmavými mlhovinami. Složky 6,6mag a 9,1mag v odstupu 2,1" jsou velmi dobrým testem kvality pro malé dalekohledy a potřebují minimálně 150-násobné zvětšení. \ No newline at end of file diff --git a/en/constellation/volans.md b/en/constellation/volans.md new file mode 100644 index 000000000..ea5bc39ba --- /dev/null +++ b/en/constellation/volans.md @@ -0,0 +1,8 @@ +--- +name: Volans +created_by: skybber +created_date: 2022-02-07 15:15:59.397003 +updated_by: skybber +updated_date: 2022-02-07 15:16:10.460928 +--- +A small and relatively obscure constellation in the southern sky that doesn't stand out much near the rich part of the Milky Way. It is located just near the south celestial pole under the bright star Canopus, between the keel star Miaplacidus and the Great Magellanic Cloud. There are no interesting objects in the constellation, with only one deep-sky spiral galaxy of 11th magnitude, seen from above, attracting attention. \ No newline at end of file diff --git a/en/constellation/vulpecula.md b/en/constellation/vulpecula.md new file mode 100644 index 000000000..daffc73bd --- /dev/null +++ b/en/constellation/vulpecula.md @@ -0,0 +1,8 @@ +--- +name: Vulpecula +created_by: skybber +created_date: 2022-02-07 15:15:09.045046 +updated_by: skybber +updated_date: 2022-02-07 15:15:09.045364 +--- +A small and faint constellation of the northern sky south of the Swan, just off Albireo, north of the Arrow and the Dolphin. The Fox lies in the eastern stream of the summer Milky Way. Although the latter is not exceptionally bright in this region, it contains an abundant surplus of 7th to 10th magnitude stars. The star clouds are good for sweeping through with a trier, and there are some nice objects to be discovered. The constellation contains a relatively large number of open clusters. The most impressive in the telescope's field of view is NGC 6940 , while the well-known open cluster Collinder 399, simply called "The Arm", is for any binoculars. There are also relatively bright nebulae, binaries, triple stars and, at the very eastern edge of the constellation, a few galaxies. The most famous object, however, is the planetary nebula M27 , one of the largest and brightest planetary nebulae, amazing in any telescope, from the Trident to the 500mm Dobsonian. Even with the smallest telescope, you can see a hint of its shape, from which it is also called diff --git a/en/star/Herschel_3750.md b/en/star/Herschel_3750.md index 56dd6be3b..578c37e39 100644 --- a/en/star/Herschel_3750.md +++ b/en/star/Herschel_3750.md @@ -3,6 +3,7 @@ name: Herschel 3750 constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:50:33.198101 --- +This tight yellow-white-blue double star was named by William Herschel as "the most beautiful double star". It can be easily verified with a smaller telescope. The components reach a brightness of 4.7mag and 8.4mag, and lie 4.2" apart. \ No newline at end of file diff --git a/en/star/Herschel_3780.md b/en/star/Herschel_3780.md index a75de547d..57257ada1 100644 --- a/en/star/Herschel_3780.md +++ b/en/star/Herschel_3780.md @@ -3,6 +3,7 @@ name: Herschel 3780 constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:48:40.323623 --- +a small cluster (NGC 2017), whose main members are listed in the Herschel catalogue. The small telescope reveals a 6mag star with four companions of 8mag to 10mag. In a larger telescope, two of the components can be verified to be close binaries. The fainter 12mag star that completes the group also appears. \ No newline at end of file diff --git a/en/star/Herschel_4788.md b/en/star/Herschel_4788.md index 217ac1456..4deab068e 100644 --- a/en/star/Herschel_4788.md +++ b/en/star/Herschel_4788.md @@ -3,6 +3,7 @@ name: Herschel 4788 constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:57:51.588207 --- +a double star that is a good test for a 100-150 mm telescope. On a calm night, this unevenly bright pair of white and yellow stars appears as two disks in contact. However, if there is any turbulence in the atmosphere, the stars merge into one elongated blob. They lie 2.2" apart and their luminosities are 4.7mag and 6.7mag respectively. \ No newline at end of file diff --git a/en/star/Hind's_Crimson_Star_(R_Lep).md b/en/star/Hind's_Crimson_Star_(R_Lep).md new file mode 100644 index 000000000..ffbebe63e --- /dev/null +++ b/en/star/Hind's_Crimson_Star_(R_Lep).md @@ -0,0 +1,9 @@ +--- +name: Hind's Crimson Star (R Lep) +constellation: Lep +created_by: 8mag +created_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:50:07.807799 +--- + Like Mira Ceti, it is a red giant that changes its brightness typically between 6mag and 11.7mag over a 430-day period. The total difference between maximum and minimum corresponds to a difference in brightness of 300 times. There is also a long secondary cycle - every 40 years the star brightens to 5.5mag. At its brightest, it resembles a deep red drop of blood in a dark sky and is visible to the naked eye. It is located near μ Lep (3.31mag). R Leporel is a giant star with a low surface temperature of about 2,700 K, with carbon molecules in its atmosphere that absorb shortwave radiation and a large dust cloud surrounding it. All of this accounts for the star's red colour, which stands out especially at times of maximum brightness. The star is visible to the trier, but binoculars are needed to see the colour clearly. \ No newline at end of file diff --git a/en/star/Hindova_karmínová_hviezda_(R_Lep).md b/en/star/Hindova_karmínová_hviezda_(R_Lep).md deleted file mode 100644 index 877fd493d..000000000 --- a/en/star/Hindova_karmínová_hviezda_(R_Lep).md +++ /dev/null @@ -1,8 +0,0 @@ ---- -name: Hindova karmínová hviezda (R Lep) -constellation: Lep -created_by: 8mag -created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 ---- diff --git a/en/star/N_Hya.md b/en/star/N_Hya.md index bf9b06dbc..58b1dc682 100644 --- a/en/star/N_Hya.md +++ b/en/star/N_Hya.md @@ -3,6 +3,7 @@ name: N Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:44:55.396720 --- +a nice almost equally bright pair of yellow 5.8mag, 5.9mag components, easily distinguishable in small telescopes, the components lie at a distance of 9.2". In the same field of view we can further see a single red-orange star, 8' to the northeast. \ No newline at end of file diff --git a/en/star/P_Hya.md b/en/star/P_Hya.md index 477196645..8e1edf5bd 100644 --- a/en/star/P_Hya.md +++ b/en/star/P_Hya.md @@ -3,6 +3,7 @@ name: P Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:44:35.449849 --- +easily distinguishable 5mag and 6.9mag components at 4' separation. Through a 60mm diameter telescope, we find that the fainter component has a 9th magnitude guide at a distance of 9.6". \ No newline at end of file diff --git a/en/star/Plaskett_star.md b/en/star/Plaskett_star.md new file mode 100644 index 000000000..1b20dde0d --- /dev/null +++ b/en/star/Plaskett_star.md @@ -0,0 +1,9 @@ +--- +name: Plaskett star +constellation: Mon +created_by: 8mag +created_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 10:13:55.332535 +--- +a spectral binary star of sixth magnitude discovered in 1922 by Canadian astronomer and director of the Victoria Observatory John Stanley Plaskett. It is the most massive binary star known. \ No newline at end of file diff --git a/en/star/Plaskettova_hviezda.md b/en/star/Plaskettova_hviezda.md deleted file mode 100644 index c96815f94..000000000 --- a/en/star/Plaskettova_hviezda.md +++ /dev/null @@ -1,8 +0,0 @@ ---- -name: Plaskettova hviezda -constellation: Mon -created_by: 8mag -created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 ---- diff --git a/en/star/R_Hydrae.md b/en/star/R_Hydrae.md index 94809aa64..107bb6f2a 100644 --- a/en/star/R_Hydrae.md +++ b/en/star/R_Hydrae.md @@ -3,6 +3,7 @@ name: R Hydrae constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:44:10.602134 --- +a red giant, one of the most famous Mira Ceti type variable stars. It varies in apparent brightness from 3.5mag to 10.9mag over a period of 389.6 days, first noticed by astronomers in the 17th century. However, the period has probably shortened by about 100 days since then. It is about 700 light-years away and at its greatest peak exceeds the luminosity of 7,000 Suns. \ No newline at end of file diff --git a/en/star/R_LMi.md b/en/star/R_LMi.md index c5b3e37db..7b57bb1ae 100644 --- a/en/star/R_LMi.md +++ b/en/star/R_LMi.md @@ -3,6 +3,7 @@ name: R LMi constellation: LMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:44:16.394014 --- +Mira-type variable star, similar in many ways to the red supergiant R Leonis. It has a period of about 372 days and varies in brightness from 6.3mag to 13.2mag, thus disappearing from the range of small telescopes. It lies 45' southeast of the star 13 LMI, which has a brightness of 6.2mag. \ No newline at end of file diff --git a/en/star/SN1987A.md b/en/star/SN1987A.md index b334c1bb9..7dfd6e4df 100644 --- a/en/star/SN1987A.md +++ b/en/star/SN1987A.md @@ -3,6 +3,7 @@ name: SN1987A constellation: Dor created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:15:51.376551 --- +a bright supernova that shone in the Large Magellanic Cloud in the vicinity of the Tarantula Nebula on 23 February 1987, reaching its maximum of 2.8 mag. Thus, after 383 years since Kepler's supernova, at least residents of the southern hemisphere could marvel at another supernova visible to the naked eye. It shone in the sky for 10 months, but is now very faint. It probably left behind a pulsar that has not yet been found. \ No newline at end of file diff --git a/en/star/SN_1006.md b/en/star/SN_1006.md new file mode 100644 index 000000000..47c6f7e04 --- /dev/null +++ b/en/star/SN_1006.md @@ -0,0 +1,9 @@ +--- +name: SN 1006 +constellation: Lup +created_by: 8mag +created_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:56:39.704566 +--- +the brightest supernova ever recorded in human history. It was noticed by the inhabitants of China and Japan, as well as the Middle East and Europe. When it first appeared in the sky in the spring of 1006, it was about as bright as Mars in opposition. Within a few weeks, however, it easily surpassed Venus, brightening to -7.5mag, equivalent to the brightness of the Moon in the first quarter. The supernova was visible for the next two years, even briefly during the day. Today, all we see at this site is a cloud of debris from the ancient stellar explosion. \ No newline at end of file diff --git a/en/star/S_Doradus.md b/en/star/S_Doradus.md index b11e72071..31b1b7bbb 100644 --- a/en/star/S_Doradus.md +++ b/en/star/S_Doradus.md @@ -3,6 +3,7 @@ name: S Doradus constellation: Dor created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:16:22.631677 --- +an exceptionally luminous star that surpasses the Sun by at least a million times in luminosity. It is one of the brightest stars ever. However, because of its distance, we cannot see it with the naked eye, and we only perceive it as a faint star whose brightness varies between 8mag and 11.5mag because it is an eclipsing variable star. Its components are between 1 400 and 1 200 times the diameter of our Sun. Its absolute brightness is about -11. \ No newline at end of file diff --git a/en/star/Struve_1104.md b/en/star/Struve_1104.md index 82eff2613..55fa999b5 100644 --- a/en/star/Struve_1104.md +++ b/en/star/Struve_1104.md @@ -3,6 +3,7 @@ name: Struve 1104 constellation: Pup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:02:25.281293 --- +a beautiful but tight pair of golden yellow stars, but one that requires good seeing to see clearly. The 6.4mag and 7.5mag brightness components are separated by 2.1". \ No newline at end of file diff --git a/en/star/Struve_1441.md b/en/star/Struve_1441.md index fcd33cc67..510501b1a 100644 --- a/en/star/Struve_1441.md +++ b/en/star/Struve_1441.md @@ -3,6 +3,7 @@ name: Struve 1441 constellation: Sex created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:03:57.843786 --- +a tight, attractive pair that can be resolved with binoculars with a lens diameter of about 100mm at a distance of 2.6". The brighter orange component has a brightness of 6.4mag, the fainter blue 9.9mag. \ No newline at end of file diff --git a/en/star/Struve_2303.md b/en/star/Struve_2303.md index 44a95f71a..ffab52e54 100644 --- a/en/star/Struve_2303.md +++ b/en/star/Struve_2303.md @@ -3,6 +3,7 @@ name: Struve 2303 constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:29:15.659075 --- +a close binary star observed in a Milky Way field of dark nebulae. The 6.6mag and 9.1mag components at 2.1" are a very good quality test for small telescopes and need at least 150x magnification. \ No newline at end of file diff --git a/en/star/Supernova_z_roku_1006.md b/en/star/Supernova_z_roku_1006.md deleted file mode 100644 index eb83278dd..000000000 --- a/en/star/Supernova_z_roku_1006.md +++ /dev/null @@ -1,8 +0,0 @@ ---- -name: Supernova z roku 1006 -constellation: Lup -created_by: 8mag -created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 ---- diff --git a/en/star/Trapezium.md b/en/star/Trapezium.md new file mode 100644 index 000000000..2ed876a86 --- /dev/null +++ b/en/star/Trapezium.md @@ -0,0 +1,9 @@ +--- +name: Trapezium +constellation: Ori +created_by: 8mag +created_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:58:25.913065 +--- +The "theta system", lies at the heart of the Great Nebula itself in Orion and is one of the most famous multiple stars in the entire sky. Its four stars, ranging in brightness from 5mag to 8mag, form a quadrangle called Trapezium. Several 11mag stars within and around the quadrangle are undoubtedly physically part of the Trapezium system. What's more, within the 5' area of Trapezium are over 400 very faint stars, extremely young objects recently born from huge clouds of gas and dust. The stars of Trapezium are extremely young, approximately 30,000 years old. \ No newline at end of file diff --git a/en/star/Trapéz.md b/en/star/Trapéz.md deleted file mode 100644 index 8d3a106fd..000000000 --- a/en/star/Trapéz.md +++ /dev/null @@ -1,8 +0,0 @@ ---- -name: Trapéz -constellation: Ori -created_by: 8mag -created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 ---- diff --git a/en/star/V_Hya.md b/en/star/V_Hya.md index 6466f6d87..c7fe486c3 100644 --- a/en/star/V_Hya.md +++ b/en/star/V_Hya.md @@ -3,6 +3,7 @@ name: V Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:45:17.219413 --- +a rare example of a carbon star. It's a low-temperature red giant that produces carbon. The star is very red, so it can't be mistaken for any other star. But it has one catch: it changes its brightness irregularly between 6th and 12th mag in two main periods - 18 months and 18 years. \ No newline at end of file diff --git a/en/star/Wolf_359.md b/en/star/Wolf_359.md index 008ebfcc5..1ab5ad403 100644 --- a/en/star/Wolf_359.md +++ b/en/star/Wolf_359.md @@ -3,6 +3,7 @@ name: Wolf 359 constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:42:02.875256 --- +a faint star with a brightness of 13.7mag, named in honour of Max Wolf, working at Heidelburg University in the early 20th century, who discovered its proper motion. It moves 4.71" across the sky every year. One reason for this apparent movement is its proximity to us. It lies at a distance of just 7.86 light years from the Sun, making it our third closest star after Proxima Centauri and Barnard's Star in Hadonos. \ No newline at end of file diff --git a/en/star/Wolf_457.md b/en/star/Wolf_457.md index bf624d73c..056728d7f 100644 --- a/en/star/Wolf_457.md +++ b/en/star/Wolf_457.md @@ -3,6 +3,6 @@ name: Wolf 457 constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:26:44.522159 --- diff --git a/en/star/hr1465.md b/en/star/hr1465.md index a06c64f52..0b19ec789 100644 --- a/en/star/hr1465.md +++ b/en/star/hr1465.md @@ -3,6 +3,7 @@ name: α Dor constellation: Dor created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:14:22.786832 --- +the brightest star in the constellation has an apparent brightness of 3.47mag. In reality, it is a close binary because 77.7" from the main component is a companion of 9.8mag brightness. It lies at a distance of 176 light years. \ No newline at end of file diff --git a/en/star/hr1705.md b/en/star/hr1705.md index 14e479178..22bfdfc6e 100644 --- a/en/star/hr1705.md +++ b/en/star/hr1705.md @@ -3,6 +3,7 @@ name: κ Lep constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:48:00.636273 --- +this binary is made up of 4.5mag and 7.4mag components, which lie at an angular separation of 2.6". To resolve them, we need a telescope with a lens diameter of at least 15 cm. At about 115x magnification, both components appear white. It is only in a larger telescope that the guide becomes blue. \ No newline at end of file diff --git a/en/star/hr1713.md b/en/star/hr1713.md index 1f9de8b26..6e1e076d5 100644 --- a/en/star/hr1713.md +++ b/en/star/hr1713.md @@ -3,6 +3,7 @@ name: Rigel (β Ori) constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:54:13.610367 --- +is usually the brightest star in the constellation, only occasionally surpassed by Betelgeuse during its peak. At 0.14mag, it is the seventh brightest star in the sky. It is a supernova of spectral type B8, so its blue-white colour can be clearly seen with the naked eye. Rigel is 78 times bigger and 12 000 times brighter than our Sun and lies 860 light years away. \ No newline at end of file diff --git a/en/star/hr1829.md b/en/star/hr1829.md index c6a29e201..4d73d9fae 100644 --- a/en/star/hr1829.md +++ b/en/star/hr1829.md @@ -3,6 +3,7 @@ name: Nihal (β Lep) constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:47:07.074593 --- +the triple stars. For a star with a brightness of 2.8mag, there are two components at a distance of 2.5" and 64", both with a brightness of 11mag. The more distant component is only an optical guide. The main star is 160 light years away. \ No newline at end of file diff --git a/en/star/hr1852.md b/en/star/hr1852.md index fd5a5fc1b..fa7d4137e 100644 --- a/en/star/hr1852.md +++ b/en/star/hr1852.md @@ -3,6 +3,7 @@ name: Mintaka (δ Ori) constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:55:37.471347 --- +the true blue-white star of the belt near the celestial equator. This is one of the easiest pairs to distinguish - a telescope with a 5 cm diameter lens will suffice. We'll see the pale blue 6.9mag companion next to the main component at a distance of 52.6". This is probably a real star pair, even though the components are half a light year apart. So their mutual orbital period could be a million years. The system lies at a distance of 2,350 light years. The main component is also a variable star, but with a very small change in brightness (about 2.2 mag). \ No newline at end of file diff --git a/en/star/hr1865.md b/en/star/hr1865.md index b84ef1e25..956ffb4e3 100644 --- a/en/star/hr1865.md +++ b/en/star/hr1865.md @@ -3,6 +3,7 @@ name: Arneb (α Lep) constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:46:37.142187 --- +the brightest star in the constellation (2.58mag), 2200 light years away. It is a supergiant 32,000 times brighter than the Sun. At an angular distance of 36" it contains a faint 11mag guide star. \ No newline at end of file diff --git a/en/star/hr1879.md b/en/star/hr1879.md index d4d850fbc..d840fbbc8 100644 --- a/en/star/hr1879.md +++ b/en/star/hr1879.md @@ -3,6 +3,7 @@ name: λ Ori constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:56:30.122062 --- +the white companions have a brightness of 3.5mag and 5.6mag, their mutual spacing is 4.4". The other two, bluish companions lie 28" and 78" respectively from this pair. λ Ori denotes the head of Orion and forms an interesting triangle with π-1 and π-2 Ori. Both reach 4th sidereal magnitude. \ No newline at end of file diff --git a/en/star/hr1899.md b/en/star/hr1899.md index 825fc7a24..a7eec862d 100644 --- a/en/star/hr1899.md +++ b/en/star/hr1899.md @@ -3,6 +3,7 @@ name: ι Ori constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:56:06.902242 --- +nice triple star suitable for small telescopes. Next to the main white component (2.8mag) lies a pale blue 7.3mag guide at a distance of 11.3". Another, reddish companion 11mag is observed at a distance of 50" from this pair. The trier shows the even wider binary Struve 747 nearby, which is made up of bright 4.8 and 5.7mag components. \ No newline at end of file diff --git a/en/star/hr1922.md b/en/star/hr1922.md index 1e7893202..b97af2c73 100644 --- a/en/star/hr1922.md +++ b/en/star/hr1922.md @@ -3,6 +3,7 @@ name: β Dor constellation: Dor created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:15:07.042098 --- +A variable Cepheid that reaches a maximum brightness of 3.8mag and decreases to 4.6mag at minimum with a period of 9.84 days. This yellow-white giant is about 1,000 light-years away. A suitable comparison star is Delta Dor, which reaches a brightness of 4.35 mag. \ No newline at end of file diff --git a/en/star/hr1931.md b/en/star/hr1931.md index 10e8de9c3..2fc0ecda6 100644 --- a/en/star/hr1931.md +++ b/en/star/hr1931.md @@ -3,6 +3,7 @@ name: σ Ori constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:57:17.186221 --- +already with a telescope with a 5 cm objective diameter we can detect two guides in the main white component 3.81mag. The first 6mag lies at a distance of 41", the second 7mag is separated by a distance of 13" . In a telescope with a lens diameter of about 15 cm, a companion 10mag is added at a distance of 11". Another 6mag companion lies within 0.2" of the main component, but it is the only one physically related to the main component. \ No newline at end of file diff --git a/en/star/hr1948.md b/en/star/hr1948.md index 2a566d4df..463d3e48f 100644 --- a/en/star/hr1948.md +++ b/en/star/hr1948.md @@ -3,6 +3,7 @@ name: Alnitak (ζ Ori) constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:55:07.438010 --- +the left star of Orion's belt is actually a triple star. Near the main component of 1.9mag is a 4.2mag companion at a distance of 2.7", and at an angular distance of 57" is another 9mag star that probably only projects into the vicinity of Alnitak. All components have a blue-white hue. \ No newline at end of file diff --git a/en/star/hr1983.md b/en/star/hr1983.md index 6817681b9..fd129f1f7 100644 --- a/en/star/hr1983.md +++ b/en/star/hr1983.md @@ -3,6 +3,7 @@ name: γ Lep constellation: Lep created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:47:35.226621 --- +this binary splits into two components in the triad, one reaching 3.7mag (yellow) and the other 6.3mag (orange). The components are 96.3" apart, separated by about 29 light years from Earth. The star belongs to the motion cluster of the Big Dipper. \ No newline at end of file diff --git a/en/star/hr2061.md b/en/star/hr2061.md index 31c049f5f..13da46669 100644 --- a/en/star/hr2061.md +++ b/en/star/hr2061.md @@ -3,6 +3,7 @@ name: Betelgeuse (α Ori) constellation: Ori created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:54:38.243093 --- +this luminous red giant is a semi-regular variable star whose brightness varies between 0.4mag and 1.3mag over a period of about 5.7 years. However, it is more orange in colour in the triad. Betelgeuse is one of the largest stars visible to the naked eye. If it were at the position of the Sun, its edge would extend to the asteroid belt. It lies 500-600 light years away. \ No newline at end of file diff --git a/en/star/hr2216.md b/en/star/hr2216.md index c204f0b66..5efb4a4f9 100644 --- a/en/star/hr2216.md +++ b/en/star/hr2216.md @@ -3,6 +3,7 @@ name: Tejat Prior (η Gem) constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:13:55.251317 --- +red giant, a bright semi-regular variable star with magnitude variations from 3.1 to 3.9 over a period of about 223 days. At a distance of 1.4", the guide has a magnitude of 8.8. A good comparison star is μ Gem. It lies at a distance of 700 light years. \ No newline at end of file diff --git a/en/star/hr2293.md b/en/star/hr2293.md index 0d2d7c1a9..ce8255122 100644 --- a/en/star/hr2293.md +++ b/en/star/hr2293.md @@ -3,6 +3,7 @@ name: 5 Lyn constellation: Lyn created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:52:20.717778 --- +triple constellation, even in a smaller telescope, is a nice, wide pair of yellow 5.3mag and blue 9.8mag components that lie 31.4" apart. A third component of 7.9mag lies at a distance of 96". The binary 6 Lyn and two other wide pairs lie nearby. The one that lies one degree northeast of 5 Lyn is made up of an orange and blue component, the other is made up of two white components. \ No newline at end of file diff --git a/en/star/hr2298.md b/en/star/hr2298.md index 3902dcda1..763015711 100644 --- a/en/star/hr2298.md +++ b/en/star/hr2298.md @@ -3,6 +3,7 @@ name: ε Mon constellation: Mon created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 10:12:43.137174 --- +the main star with a brightness of 4.5mag has a guide star with a brightness of 6.5mag at a distance of 13.4", which we can find with a smaller telescope. Both components are yellow. At a distance of 93.7" from them, we can detect a pale blue companion of 12.7mag with a larger telescope. \ No newline at end of file diff --git a/en/star/hr2356.md b/en/star/hr2356.md index 106ebf65a..faa635c73 100644 --- a/en/star/hr2356.md +++ b/en/star/hr2356.md @@ -3,6 +3,7 @@ name: β Mon constellation: Mon created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 10:13:05.317779 --- +the brightest star in the constellation has an apparent brightness of 3.95mag. It is one of the magnificent triple stars discovered in 1781 by W. Herschel, all of whose blue-white components can be distinguished even with small telescopes as a tiny triangle. The two components of brightness 4.7mag and 5.2mag are located 7.3" apart. The 6.1mag guide lies at a distance of 2.8" from the first component. The system is about 700 light years away. With a larger telescope, we can still detect a 12mag star at a distance of 25.9". This entire system is referred to as 11 Mon. \ No newline at end of file diff --git a/en/star/hr2451.md b/en/star/hr2451.md index ea1c56918..61cca8a26 100644 --- a/en/star/hr2451.md +++ b/en/star/hr2451.md @@ -3,6 +3,7 @@ name: ν Pup constellation: Pup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:00:57.155167 --- +an easily resolved binary only 26' NE of σ Puppis. The components of this pair have brightnesses of 4.7mag and 5.1mag and a mutual separation of 4'. \ No newline at end of file diff --git a/en/star/hr2470.md b/en/star/hr2470.md index 4f0d7ecf6..13c381bff 100644 --- a/en/star/hr2470.md +++ b/en/star/hr2470.md @@ -3,6 +3,7 @@ name: 12 Lyn constellation: Lyn created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:51:57.490919 --- +a physical binary star made up of relatively equally bright components - 5.4mag and 6mag. They are 1.8" apart and have an orbital period of 907 years. At a distance of about 8.5" from the brighter component is another companion with a brightness of 7.5mag. \ No newline at end of file diff --git a/en/star/hr2564.md b/en/star/hr2564.md index 5828a2eb0..e0a2640bd 100644 --- a/en/star/hr2564.md +++ b/en/star/hr2564.md @@ -3,6 +3,7 @@ name: 38 Gem constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:15:20.840611 --- +The companions have a brightness of 4.7mag and 7.7mag and orbit each other once every 3,190 years or so. At the turn of the century, they were about 7.1" apart, which makes the components comfortably separated with a telescope with an 8 cm diameter lens. One is yellow, the other light blue. \ No newline at end of file diff --git a/en/star/hr2650.md b/en/star/hr2650.md index 4a80b2747..f2b141c81 100644 --- a/en/star/hr2650.md +++ b/en/star/hr2650.md @@ -3,6 +3,7 @@ name: Mekbuda (ζ Gem) constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:14:59.981504 --- +one of the brightest Cepheids in the sky: the main yellow star varies its brightness from 3.6mag to 4.1mag with a period of 10.15 days. Suitable comparison stars are κ (3.57mag) and υ Gem (4.07mag). One guide is located at a distance of 96" and has a brightness of 8mag, the other 11mag is observed 87" away. However, they are only optically companions. Mekbuda pulses from a distance of 1120 light years. \ No newline at end of file diff --git a/en/star/hr2671.md b/en/star/hr2671.md index 66d68a0e2..4ef1316a9 100644 --- a/en/star/hr2671.md +++ b/en/star/hr2671.md @@ -3,6 +3,7 @@ name: R Gem constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:15:44.662825 --- +a variable star of the type Mira Ceti, its brightness varies between 6-14mag over a period of 370 days. It lies close to the star δ Gem. \ No newline at end of file diff --git a/en/star/hr2748.md b/en/star/hr2748.md index 5b9e65f0b..a6b87109a 100644 --- a/en/star/hr2748.md +++ b/en/star/hr2748.md @@ -3,6 +3,7 @@ name: L2 Puppis constellation: Pup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:01:44.872031 --- +a bright long-period variable star belonging to the Myriad group, one of the brightest red variable stars, whose brightness varies between 2.6mag and 6.2mag over a period of 141 days. At its maximum, it is therefore very visible from illuminated areas, but at its minimum it falls to the limit of naked-eye visibility. \ No newline at end of file diff --git a/en/star/hr2777.md b/en/star/hr2777.md index 4f30481e6..34df1a4ba 100644 --- a/en/star/hr2777.md +++ b/en/star/hr2777.md @@ -3,6 +3,7 @@ name: Wasat (δ Gem) constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:14:36.959097 --- +a binary star distinguishable with a small telescope. The main star has a brightness of 3.5mag and the companion 8.2mag, with an orbital period of about 1,200 years. In 1985, the companion was 6" away from the main star, so it could be observed with a telescope with a 6 cm diameter objective lens. By 2000, their mutual distance had been reduced to 5.8". Even so, this is no problem for a 200 mm telescope, in which we can see their yellow or light blue color. \ No newline at end of file diff --git a/en/star/hr2784.md b/en/star/hr2784.md index d705f3e73..560afc3ca 100644 --- a/en/star/hr2784.md +++ b/en/star/hr2784.md @@ -3,6 +3,7 @@ name: 19 Lyn constellation: Lyn created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:52:43.011607 --- +this optical binary can be easily resolved with a small telescope. The two stars, one 5.6mag and the other 6.5mag, are 14.8" apart. The first is yellow-white, the second light blue. The light from one is 680 light years away, the light from the other 690 light years away. In the larger telescope, two more optical companions are added. \ No newline at end of file diff --git a/en/star/hr2878.md b/en/star/hr2878.md index 1274e5b48..669dd874d 100644 --- a/en/star/hr2878.md +++ b/en/star/hr2878.md @@ -3,6 +3,7 @@ name: σ Pup constellation: Pup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:01:17.289410 --- +a nice binary star that can be resolved with a 5 cm telescope. The main orange component has a brightness of 3.3mag and its yellow companion at a distance of 22.3" reaches only 9.4mag. \ No newline at end of file diff --git a/en/star/hr2891.md b/en/star/hr2891.md index 42d1a3eb2..81647171c 100644 --- a/en/star/hr2891.md +++ b/en/star/hr2891.md @@ -3,6 +3,7 @@ name: Kastor (α Gem) constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:13:09.872387 --- +Although Pollux is slightly brighter, the Greek alpha letter is Kastor (the 23rd brightest star in the sky). It has a brightness of 1.5mag and is 51 light years from Earth. In addition, it is a known multiple system. The main component has a luminosity of 1.9mag and is 22 times brighter overall than the Sun, with the guide reaching 2.9mag. They orbit each other around a common centre of gravity in 445 years. The pair's angular separation has been quite small in recent years, reaching its minimum of 1.9" in 1970. Since then, it has gradually increased again, so that these blue components can be resolved with a small telescope. In 1985 their distance was 2.6" and by 2017 it had grown to 6". \ No newline at end of file diff --git a/en/star/hr2990.md b/en/star/hr2990.md index 58d3a6475..91eb106a5 100644 --- a/en/star/hr2990.md +++ b/en/star/hr2990.md @@ -3,6 +3,7 @@ name: Pollux (β Gem) constellation: Gem created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:12:33.226361 --- +with a brightness of 1.14mag is the 17th brightest star in the sky. Its luminosity is 33 times that of the Sun, and its diameter is 9 times larger. Unlike Kastoria, Pollux is orange-red and has a spectral class of K0. Its striking hue can be seen with the naked eye. It is located at a distance of 34 light years. \ No newline at end of file diff --git a/en/star/hr3165.md b/en/star/hr3165.md index 92c39502d..986667833 100644 --- a/en/star/hr3165.md +++ b/en/star/hr3165.md @@ -3,6 +3,7 @@ name: Naos (ζ Puppis) constellation: Pup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:00:37.016074 --- +Since the Argo originally considered itself as a single constellation, the procedure for designating stars with Greek letters is the same for all its divided parts. Therefore, we find no alpha, beta, gamma or delta Puppis in Argo, the brightest star being only ζ Puppis, which reaches a brightness of 2.3mag. \ No newline at end of file diff --git a/en/star/hr3188.md b/en/star/hr3188.md index b1fcd6621..5294f2392 100644 --- a/en/star/hr3188.md +++ b/en/star/hr3188.md @@ -3,6 +3,7 @@ name: ζ Mon constellation: Mon created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 10:12:17.085476 --- +an optical binary star. The main component has a brightness of 5mag, its companion 8.5mag. It lies at a distance of 66.4". The other companion is at 32". We need binoculars with a 7cm diameter objective lens. \ No newline at end of file diff --git a/en/star/hr3482.md b/en/star/hr3482.md index 26b8ae966..62dcc2805 100644 --- a/en/star/hr3482.md +++ b/en/star/hr3482.md @@ -3,6 +3,7 @@ name: ε Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:41:42.323586 --- +the main component with a brightness of 3.8mag has a guide of 6.9mag at a distance of 2.8". To resolve this double star, we need a telescope with a lens diameter of at least 8 cm. The components orbit each other in 870 years and lie at a distance of 129ly. \ No newline at end of file diff --git a/en/star/hr3690.md b/en/star/hr3690.md index 6ae893691..7c519a324 100644 --- a/en/star/hr3690.md +++ b/en/star/hr3690.md @@ -3,6 +3,7 @@ name: 38 Lyn constellation: Lyn created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:51:20.365490 --- +a double star approximately on the boundary with the neighbouring constellation of the Little Lion. The main white component reaches a brightness of 3.9mag, the rusty guide 6.6mag. They are 2.7" apart and their distance from Earth is about 117 light years. The main star has about 32 times the luminosity of the Sun. At a distance of about 88" from this star we see another guide star of stellar magnitude 11mag, but it only projects into this region by chance. It is advisable to use at least 100x magnification. \ No newline at end of file diff --git a/en/star/hr3748.md b/en/star/hr3748.md index 1469b6d13..0035a955a 100644 --- a/en/star/hr3748.md +++ b/en/star/hr3748.md @@ -3,6 +3,7 @@ name: Alfard (α Hya) constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:41:12.826387 --- +the brightest star in the constellation, lies at the conjunction of the stars Kastor - Pollux of Gemini. Its remarkable orange colouring can certainly be seen with the naked eye, and it belongs to the spectral class K3. This giant reaches 2mag and is located in a relatively star-poor region. That is why its translated name from Arabic means "Solitary Star". Tycho de Brahe, however, called it Cor Hydraul - "Heart of the Hydra". It lies at a distance of 177 light years and is 780 times more luminous than the Sun. \ No newline at end of file diff --git a/en/star/hr3787.md b/en/star/hr3787.md index 3916e9894..a63e31df6 100644 --- a/en/star/hr3787.md +++ b/en/star/hr3787.md @@ -3,6 +3,7 @@ name: τ1 Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:43:18.915658 --- +The 4.8mag and 8mag components lie 65" apart. This is an optical binary star, for which even binoculars are sufficient to resolve. \ No newline at end of file diff --git a/en/star/hr3882.md b/en/star/hr3882.md index 350f9e6a3..bbbd95c32 100644 --- a/en/star/hr3882.md +++ b/en/star/hr3882.md @@ -3,6 +3,7 @@ name: R Leonis constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:41:28.107370 --- +a variable star of the type Mira Ceti in the western part of the constellation, near Regulus, 372 light years away. This red giant varies in brightness from 4.4mag to 11.3mag with a long period of 312.43 days. It is therefore one of the brightest long-period variable stars. At the time of maximum, we can notice its distinct, deep red hue, which contrasts nicely with the white star 19 Leonis, 8' to the south. \ No newline at end of file diff --git a/en/star/hr3981.md b/en/star/hr3981.md index f482f006f..af2ef6bb8 100644 --- a/en/star/hr3981.md +++ b/en/star/hr3981.md @@ -3,6 +3,7 @@ name: α Sex constellation: Sex created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:02:59.687941 --- +the brightest star in the constellation has an apparent brightness of 4.5mag. It lies almost exactly on the celestial equator. It is 270 light years away. \ No newline at end of file diff --git a/en/star/hr3982.md b/en/star/hr3982.md index 982c96b15..6d35a399f 100644 --- a/en/star/hr3982.md +++ b/en/star/hr3982.md @@ -3,6 +3,7 @@ name: Regulus (α Leonis) constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:26:28.595677 --- +the brightest star in the constellation. The 9-fold elongation of the front wheels of the Big Dipper will lead us to it in a southerly direction. Together with the stars Arcturus of Shepherd and Spica of Virgo, it forms a kind of spring triangle. The name comes from Latin and means "little king"; indeed, in ancient Babylon it always represented the star of the ruler. Sometimes we can also meet the name Cor Leonis - "heart of the lion". Regulus is also one of the four guardians of the sky, or even royal stars - they were the stars that marked the summer solstice point (Regulus), the spring point (Aldebaran), the winter solstice (Fomalhaut) and the autumn point (Antares) in the Persian Empire. These divided the sun's orbit - the ecliptic - and thus the year into four seasons. It is one of the few bright stars that lies near the ecliptic, exactly 1.5 degrees. That's why it's often occulted by the moon and sometimes a planet. \ No newline at end of file diff --git a/en/star/hr3989.md b/en/star/hr3989.md index 49c88db20..c8de75e74 100644 --- a/en/star/hr3989.md +++ b/en/star/hr3989.md @@ -3,6 +3,7 @@ name: 17 a 18 Sex constellation: Sex created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:03:40.123314 --- +a broad pair of unrelated stars that can be identified with the naked eye if the observer has good eyesight. They are easily separated by a trier. They have brightnesses of 5.9 and 5.6mag. The components are 530 and 470 light years apart. \ No newline at end of file diff --git a/en/star/hr4031.md b/en/star/hr4031.md index 946dfccbb..e50eabcb2 100644 --- a/en/star/hr4031.md +++ b/en/star/hr4031.md @@ -3,6 +3,7 @@ name: ζ Leonis constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:39:06.511874 --- +a wide triple star, composed of stars that have no relationship to each other. ζ Leonis has a brightness of 3.4 mag. The binocular shows the star 35 Leonis to the north of it and 39 Leonis further south. Both reach 6 mag. \ No newline at end of file diff --git a/en/star/hr4057.md b/en/star/hr4057.md index bb89a088b..3c0717308 100644 --- a/en/star/hr4057.md +++ b/en/star/hr4057.md @@ -3,6 +3,7 @@ name: Algieba (γ Leonis) constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:38:32.037612 --- +"Lion's forehead", a corruption of the Arabic word Al Jabha. Actually a magnificent binary star lying 8 degrees SSE of Regulus, with yellow-orange components of 2.2mag (lum. 90 Suns) and 3.5mag (lum. 30 Suns) at a distance of 4.4", in contrast to each other they can be seen as far as green. Their mutual orbital period is estimated at 619 years. As recently as 1782, when this attractive double star was first discovered by William Herschel, the arc distance of its components was less than 2". Since then, the distance has increased significantly, reaching nearly 4.4" by the end of the 20th century. \ No newline at end of file diff --git a/en/star/hr4100.md b/en/star/hr4100.md index ecfee6234..f28863c46 100644 --- a/en/star/hr4100.md +++ b/en/star/hr4100.md @@ -3,6 +3,7 @@ name: β LMi constellation: LMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:43:50.982559 --- +the only star in the constellation to be assigned a Greek letter. This tight binary, which looks like a bright 4.2mag point when viewed with the naked eye, will only show its 6.1mag companion in a large telescope and during good viewing conditions. It is located at an angular distance of only a few tenths of a second. The components have an orbital period of 37 years and a distance of 145 light years. \ No newline at end of file diff --git a/en/star/hr4163.md b/en/star/hr4163.md index b3cc6e0b3..0c0d54d40 100644 --- a/en/star/hr4163.md +++ b/en/star/hr4163.md @@ -3,6 +3,7 @@ name: U Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:42:20.781557 --- +one of the brightest and most unusual carbon stars, whose red colour can be seen even in the smallest binocular. This is due to the abundance of carbon molecules in its atmosphere that absorb blue light. U Hya is observed 4 degrees northwest of ν Hydra and is one of the irregular variable stars whose magnitude varies with some regularity from 4.7mag to 6.2mag over a period of about 450 days. It is about 680 light years away. \ No newline at end of file diff --git a/en/star/hr4193.md b/en/star/hr4193.md index 087b87b90..ddf5a06fd 100644 --- a/en/star/hr4193.md +++ b/en/star/hr4193.md @@ -3,6 +3,7 @@ name: 35 Sex constellation: Sex created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 12:03:17.273799 --- +a nice pair of orange 6.3mag and yellow-orange 7.4mag components, which are easily distinguishable even in a small amateur telescope. Their separation is 6.8". \ No newline at end of file diff --git a/en/star/hr424.md b/en/star/hr424.md index eaef43db3..d9f0afc79 100644 --- a/en/star/hr424.md +++ b/en/star/hr424.md @@ -1,8 +1,9 @@ --- -name: Polárka (α UMi) +name: Polaris (α UMi) constellation: UMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:21:55.345307 --- +On the seas, in the desert and in the wilderness, it was in ancient times, before the invention of the compass, the only indicator of north. It is easily found by plotting the distance of the stars Merak and Dubhe, which form the back wheels of the Big Dipper, 4 times in the direction of the line of the line, and we reach Polaris, which is at the end of the drawbar of the Little Dipper. \ No newline at end of file diff --git a/en/star/hr4259.md b/en/star/hr4259.md index 1fa1f7641..5955fa26c 100644 --- a/en/star/hr4259.md +++ b/en/star/hr4259.md @@ -3,6 +3,7 @@ name: 54 Leonis constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:40:18.511668 --- +a binary star lying just on the boundary with the constellation of the Little Lion. These two partners have brightnesses of 4.5mag and 6.3mag. The two stars are 6.5" apart, so they should already be distinguishable with a telescope with a lens diameter of at least 5 cm. The system is 330 light years from Earth. In 10-15 cm telescopes and 100x magnification, it is an unequally bright, colorful binary. The main component appears yellow-white, the guide is bluish to greenish. \ No newline at end of file diff --git a/en/star/hr4399.md b/en/star/hr4399.md index ae8e464ed..5cfab86dc 100644 --- a/en/star/hr4399.md +++ b/en/star/hr4399.md @@ -3,6 +3,7 @@ name: ι Leonis constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:39:36.413071 --- +a remarkable double star. The two components with brightnesses of 4.1mag and 7.0mag orbit each other in about 180 years. In 1985, they were 1.3" apart, but they begin to drift apart, reaching 1.7" by the year 2000, making the binary resolvable in at least a 10 cm telescope. \ No newline at end of file diff --git a/en/star/hr4418.md b/en/star/hr4418.md index 29741af76..4e0497537 100644 --- a/en/star/hr4418.md +++ b/en/star/hr4418.md @@ -3,6 +3,7 @@ name: τ Leonis constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:40:53.911552 --- +a double star, easily distinguishable with a simple trier. The main star has a brightness of 5.4mag and its companion 7.0mag. The angular separation of the two partners is 90". \ No newline at end of file diff --git a/en/star/hr4534.md b/en/star/hr4534.md index 49bed9723..727df988b 100644 --- a/en/star/hr4534.md +++ b/en/star/hr4534.md @@ -3,6 +3,7 @@ name: Denebola (β Leonis) constellation: Leo created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:26:58.340184 --- +has a luminosity of 2.2mag and its distance from Earth is 36 light years. It's 15 times brighter than the sun. At a distance of almost 19 arc minutes, we find a yellowish star with a brightness of 6mag, which we can already see through a theatre peephole. \ No newline at end of file diff --git a/en/star/hr5291.md b/en/star/hr5291.md index 80c4270ac..e7b9c9647 100644 --- a/en/star/hr5291.md +++ b/en/star/hr5291.md @@ -3,6 +3,7 @@ name: Thuban (α Dra) constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:18:20.644712 --- +once the brightest star in the constellation, now only 3.6 mag. 4,800 years ago, in the time of ancient Egypt, it marked the north celestial pole, just 10 arc minutes away. However, it has since shifted towards Polaris as a result of the precession of the Earth's axis, and Thuban is now over 25 degrees from it. Thuban belongs to spectral class AO and lies midway between Mizar and Kochab. It is 215 light years away and 135 times brighter than the Sun. \ No newline at end of file diff --git a/en/star/hr5469.md b/en/star/hr5469.md index 7c3532383..eddf9854d 100644 --- a/en/star/hr5469.md +++ b/en/star/hr5469.md @@ -3,6 +3,7 @@ name: α Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:53:08.307344 --- +the brightest star in the constellation. It varies in apparent brightness from 2.3mag to 2.8mag in a period of 0.260 days. It has a faint companion of 13.4mag. It is 460 light-years distant. \ No newline at end of file diff --git a/en/star/hr5497.md b/en/star/hr5497.md index d6f4c90f9..af10ea8b0 100644 --- a/en/star/hr5497.md +++ b/en/star/hr5497.md @@ -3,6 +3,7 @@ name: 54 Hya constellation: Hya created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-06 11:43:44.158012 --- +a binary star made up of 5.1mag and 7.1mag components that can be easily resolved by small telescopes at 8.6". Note the color of both stars, one is bright, the other is dark yellow. \ No newline at end of file diff --git a/en/star/hr5523.md b/en/star/hr5523.md index e8157a998..02ec15d5d 100644 --- a/en/star/hr5523.md +++ b/en/star/hr5523.md @@ -3,6 +3,7 @@ name: μ Lib constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:48:42.291162 --- +double star, in a good 100 mm refractor we can see it as a close pair of white stars, like two disks in contact (1.8"). We can distinguish them completely during calm atmospheric conditions. The components have brightnesses of 5.8mag and 6.7mag. \ No newline at end of file diff --git a/en/star/hr5531.md b/en/star/hr5531.md index c2e575c0f..ca3e0511e 100644 --- a/en/star/hr5531.md +++ b/en/star/hr5531.md @@ -3,6 +3,7 @@ name: Zubenelgenubi (α Lib) constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:46:41.081257 --- +The name means "southern claw" and recalls the origin of the constellation. It is a very easily distinguishable double star, for which even a viewable telescope will suffice. At the main component of 2.75mag, there is a companion of 5.8mag at a distance of 231". In the triad it is a bright wide pair consisting of a white and yellow component. Since both stars show the same proper motion, this is probably a true stellar pair. Its distance from Earth is 75 light years. \ No newline at end of file diff --git a/en/star/hr5586.md b/en/star/hr5586.md index d58496c05..447ebdbc9 100644 --- a/en/star/hr5586.md +++ b/en/star/hr5586.md @@ -3,6 +3,7 @@ name: δ Lib constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:48:19.247262 --- +an occulting variable star similar to Algol, with a period of 2.32 days and a brightness range of 4.92-5.9mag. The entire cycle of brightness changes is therefore observable with the naked eye. The change from maximum to minimum takes place in about 6 hours, which can be noticed even on a spring night. There is one faint secondary minimum between the main minima, but it is only one tenth of the stellar size, so it is hardly noticeable. The system is nearly 300 light years from Earth. \ No newline at end of file diff --git a/en/star/hr5605.md b/en/star/hr5605.md index 055d32637..b4f6d5adc 100644 --- a/en/star/hr5605.md +++ b/en/star/hr5605.md @@ -3,6 +3,7 @@ name: π Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:54:40.826475 --- +a nice system of almost equally bright pale blue stars, but one that requires quite a bit of magnification to distinguish. The stars lie only 1.4" apart. Their brightnesses are 4.6mag and 4.7mag. They lie at a distance of 440 light years. \ No newline at end of file diff --git a/en/star/hr5646.md b/en/star/hr5646.md index ccf88ef2f..9eeb8335c 100644 --- a/en/star/hr5646.md +++ b/en/star/hr5646.md @@ -3,6 +3,7 @@ name: κ Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:53:55.433114 --- +a nice binary star whose white components with brightness 3.9mag and 5.8mag are 26.8" apart, so a telescope with a 5 cm objective is sufficient to resolve them. It is an optical binary only. \ No newline at end of file diff --git a/en/star/hr5652.md b/en/star/hr5652.md index 1e5d52035..5b5aa1a38 100644 --- a/en/star/hr5652.md +++ b/en/star/hr5652.md @@ -3,6 +3,7 @@ name: ι Lib constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:47:49.569646 --- +a complex multiple star that appears to be a single 4.2mag bright star when observed with the naked eye. Binocular will show its companion, referred to as 25 Librae. A telescope with a lens diameter over 80mm will reveal that the primary star has a faint 9mag guide at a distance of 58". A larger telescope and proper magnification should eventually prove it to be a tight binary as well. Its faint 11mag guide is at a distance of 1.9" from it. \ No newline at end of file diff --git a/en/star/hr5683.md b/en/star/hr5683.md index 5be450402..e81c54dc4 100644 --- a/en/star/hr5683.md +++ b/en/star/hr5683.md @@ -3,6 +3,7 @@ name: μ Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:54:20.419224 --- +a triple star whose two main white components have magnitudes of 5.1mag and 5.2mag. They lie at a close distance of 1.2" and are a good test for a 100mm telescope. The brighter component has an additional yellow guide of 7.3mag, which is located at a distance of 23.7" from it and is visible even in a smaller telescope. \ No newline at end of file diff --git a/en/star/hr5685.md b/en/star/hr5685.md index 19b9e159f..b03b9e5f1 100644 --- a/en/star/hr5685.md +++ b/en/star/hr5685.md @@ -3,6 +3,7 @@ name: Zubenelschemali (β Lib) constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:46:14.804035 --- +The "northern claw" is slightly brighter (2.61mag) and has a strange greenish tint, which is a bit unusual. The star is about 100 times brighter than the Sun. \ No newline at end of file diff --git a/en/star/hr5694.md b/en/star/hr5694.md index b9b8385ad..80b78b59e 100644 --- a/en/star/hr5694.md +++ b/en/star/hr5694.md @@ -3,6 +3,7 @@ name: 5 Ser constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:27:13.253137 --- +an unequally bright pair of yellow 5.1mag and reddish 10.1mag components 11.2" apart. A companion 9.1mag and the globular cluster M5 are in the field of view at a distance of 127". \ No newline at end of file diff --git a/en/star/hr5735.md b/en/star/hr5735.md index 9501620f9..d104af584 100644 --- a/en/star/hr5735.md +++ b/en/star/hr5735.md @@ -3,6 +3,7 @@ name: Pherkad (γ UMi) constellation: UMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:22:26.397611 --- +The "blue and white" second wheel of the Little Chariot, near which is the orange star 11 Ursae minoris. The Arabs called them Pherkad - "two calves", later they began to distinguish Pherkad Maior (3.05 mag) and Pherkad Minor (5.02 mag). They form only an optical binary star, whose components are 480 and 390 light years apart, respectively. \ No newline at end of file diff --git a/en/star/hr5788.md b/en/star/hr5788.md index 7cc69f063..7f88e1ccf 100644 --- a/en/star/hr5788.md +++ b/en/star/hr5788.md @@ -3,6 +3,7 @@ name: δ Ser constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:26:11.321523 --- +the close pale yellow companions have a brightness of 4.2mag and 5.2mag. They orbit each other in a period of 3.170 years. We see them as a pair 4.4" apart in the sky. In a large telescope, we can see two more faint companions in close proximity with brightnesses of 14.7mag and 15mag. \ No newline at end of file diff --git a/en/star/hr5812.md b/en/star/hr5812.md index 07d365bb1..e2c7e82e9 100644 --- a/en/star/hr5812.md +++ b/en/star/hr5812.md @@ -3,6 +3,7 @@ name: τ Lib constellation: Lib created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:47:02.445657 --- +a pair of stars with brightnesses of 4.7mag and 9.7mag are separated by 8.5", so we can distinguish them with at least a 6 cm telescope. The system is 367 light years from Earth. \ No newline at end of file diff --git a/en/star/hr5854.md b/en/star/hr5854.md index 9307af7ad..7e95ad6d1 100644 --- a/en/star/hr5854.md +++ b/en/star/hr5854.md @@ -3,6 +3,7 @@ name: Unukalhai (α Ser) constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:25:15.613656 --- +the brightest star in the constellation is 2.65mag. It is 74 light years from Earth and 35 times more luminous than the Sun. It belongs to the spectral class K2 and is an orange giant. \ No newline at end of file diff --git a/en/star/hr5867.md b/en/star/hr5867.md index f3caf63c4..d34467f72 100644 --- a/en/star/hr5867.md +++ b/en/star/hr5867.md @@ -3,6 +3,7 @@ name: β Ser constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:25:40.898336 --- +a double star whose bright yellow and bluish yellow components have brightnesses of 3.7mag and 9.9mag, respectively, and lie 31" apart. We can therefore distinguish them with a small telescope. The system is 155ly from Earth. At a distance of 201" we can observe a component of 10.7mag. \ No newline at end of file diff --git a/en/star/hr5894.md b/en/star/hr5894.md index d4311d178..81e98c574 100644 --- a/en/star/hr5894.md +++ b/en/star/hr5894.md @@ -3,6 +3,7 @@ name: R Ser constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:27:38.465566 --- +a Mira-type variable star 10 degrees from Unukalhai between β and γ Ser, which reaches stellar magnitude 6 at its maximum, but is lost from the range of the triad at its minimum as it drops to 13.4mag. The period of variation of its brightness is approximately 1 year - 357 days. \ No newline at end of file diff --git a/en/star/hr5925.md b/en/star/hr5925.md index d67542f09..8e9c85143 100644 --- a/en/star/hr5925.md +++ b/en/star/hr5925.md @@ -3,6 +3,7 @@ name: ξ Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:55:05.069650 --- +bright, relatively wide pair (10.4"), easily distinguishable in small binoculars. The components have brightnesses of 5.3mag and 5.8mag, and observers perceive their colors differently: some see them as bright yellow, others say one is white and the other has a greenish tint. In general, stars with an AO spectrum appear white to pale blue. \ No newline at end of file diff --git a/en/star/hr5948.md b/en/star/hr5948.md index 05d8363e0..7e9de8f87 100644 --- a/en/star/hr5948.md +++ b/en/star/hr5948.md @@ -3,6 +3,7 @@ name: η Lup constellation: Lup created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:53:34.755475 --- +a triple star whose main component is blue-white and the guide is dark blue. The difference between their brightnesses is quite significant (3.6mag and 7.8mag), but with their 15" separation from each other, we should be able to distinguish them with a small telescope. The other companion 9.4mag lies 115" from the main component. Just to the northeast lie two 20" wide pairs of white stars. \ No newline at end of file diff --git a/en/star/hr5978.md b/en/star/hr5978.md index a1640f4b2..cdf342ca9 100644 --- a/en/star/hr5978.md +++ b/en/star/hr5978.md @@ -3,6 +3,7 @@ name: ξ Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:35:55.215248 --- +a nice double star, with brightness components of 4.8mag and 7.3mag (bluish) at a distance of 7.6". The main star is also a binary, currently unobservable with a small telescope. The second component is almost as bright (5.1mag) and lies at a distance of only 0.5". It is yellow in colour. In the same field of view is Struve 1999, a dark yellow pair of 7.4mag and 8.1mag components, at a distance of 11.6". \ No newline at end of file diff --git a/en/star/hr5984.md b/en/star/hr5984.md index 80169bc20..d08874f2a 100644 --- a/en/star/hr5984.md +++ b/en/star/hr5984.md @@ -3,6 +3,7 @@ name: Graffias (β Sco) constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:32:48.980000 --- +it is a binary star with 2.6mag and 4.9mag components separated by 13.6". The main component is pale blue, the guide is dark blue, but there is no relationship between the two. The brighter component itself, however, is a close binary that is not easily distinguished even in a larger telescope. \ No newline at end of file diff --git a/en/star/hr5993.md b/en/star/hr5993.md index e3e5629eb..e665d57f3 100644 --- a/en/star/hr5993.md +++ b/en/star/hr5993.md @@ -3,6 +3,7 @@ name: ω Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:34:50.746676 --- +an optical binary visible to the naked eye, composed of stars of 3.9mag and 4.3mag. One is 470 and the other 290 light years away. \ No newline at end of file diff --git a/en/star/hr6008.md b/en/star/hr6008.md index eabedfb51..6b839f51e 100644 --- a/en/star/hr6008.md +++ b/en/star/hr6008.md @@ -3,6 +3,7 @@ name: Marfak (κ Her) constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:22:58.732305 --- +a physical binary whose yellow components of 5.3mag and 6.5mag are 28.4" apart and can therefore be distinguished even in small telescopes. \ No newline at end of file diff --git a/en/star/hr6027.md b/en/star/hr6027.md index e518aefbd..c40433477 100644 --- a/en/star/hr6027.md +++ b/en/star/hr6027.md @@ -3,6 +3,7 @@ name: ν Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:35:26.680432 --- + a four-pointed star, a small telescope can resolve two optical components at a distance of 44" with a brightness of 4.3mag and 6.4mag. The main star is already a true binary, the 6.8mag companion lies at a distance of only 0.9". The companion of the second star - a 7.8mag component - is located at a distance of 2.3" and is within the range of the 80 mm telescope. \ No newline at end of file diff --git a/en/star/hr6084.md b/en/star/hr6084.md index a62b1290b..6be6b2790 100644 --- a/en/star/hr6084.md +++ b/en/star/hr6084.md @@ -3,6 +3,7 @@ name: σ Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:33:24.703231 --- +variable star, whose brightness varies between 3mag and 3.8mag over a period of 0.247 days, is also a binary star. The 9mag guide lies at a distance of 20" \ No newline at end of file diff --git a/en/star/hr6116.md b/en/star/hr6116.md index f31a548c5..dade18d56 100644 --- a/en/star/hr6116.md +++ b/en/star/hr6116.md @@ -3,6 +3,7 @@ name: η UMi constellation: UMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:22:58.202763 --- +an optical binary whose main white component is 97 light-years away. When observed with the naked eye and a binocular, we can also see the other component, 19 Ursa minor, and its distant companion (5.5 mag), which is almost seven times farther away. \ No newline at end of file diff --git a/en/star/hr6134.md b/en/star/hr6134.md index 82c918884..e699c4b6a 100644 --- a/en/star/hr6134.md +++ b/en/star/hr6134.md @@ -3,6 +3,7 @@ name: Antares (α Sco) constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:32:19.885821 --- +in antiquity, people saw this star as a competitor, the antipole of Mars (anti-Arés: against Mars), because the striking red star is very similar to the "Red Planet". The Old Arabic name Kal al Akrab is no longer used, but the Latin name Cor Scorpion - Heart of the Scorpion - is derived from it. It lies at the intersection of the elongated junctions of the sides of the Hercules quadrilateral. The physical guide, greenish in colour and 5.4mag in brightness, can be found at a distance of 2.9" preferably with 200mm and larger binoculars, as it is obstructed by the main star's glow. At least 250x magnification is recommended for visual resolution. It orbits the main component in approximately 555 years. \ No newline at end of file diff --git a/en/star/hr6184.md b/en/star/hr6184.md index c10b5c88c..12159891d 100644 --- a/en/star/hr6184.md +++ b/en/star/hr6184.md @@ -3,6 +3,7 @@ name: 16/17 Dra constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:20:41.941797 --- +a nice wide double star distinguishable in binoculars or small telescopes. The two components of nearly 5.5mag brightness are separated by 90.3". In fact, the 17 Dra component still has a close companion that lies 3.4" from it. All the stars are bright white. \ No newline at end of file diff --git a/en/star/hr6194.md b/en/star/hr6194.md index 5659f3840..e80bda380 100644 --- a/en/star/hr6194.md +++ b/en/star/hr6194.md @@ -3,6 +3,7 @@ name: 36/37 Her constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:23:27.678750 --- +two ordinary nearby stars that we can distinguish with the binocular. They are located at the southwestern edge of the constellation at a mutual distance of 70" and their brightnesses are 5.7mag and 6.8mag, respectively. \ No newline at end of file diff --git a/en/star/hr6212.md b/en/star/hr6212.md index 9c9a50f15..c24e05c97 100644 --- a/en/star/hr6212.md +++ b/en/star/hr6212.md @@ -3,6 +3,7 @@ name: ζ Her constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:18:27.799454 --- +a nice potted double star. The components have magnitudes of 2.9mag and 5.5mag and are approximately 1.6" apart. Since their orbital period is only 34.5 years, the position angle and mutual distance change rapidly. \ No newline at end of file diff --git a/en/star/hr6247.md b/en/star/hr6247.md index a7be4cd52..b30e67b01 100644 --- a/en/star/hr6247.md +++ b/en/star/hr6247.md @@ -3,6 +3,7 @@ name: μ Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:34:00.595571 --- +a binary star easily distinguishable to the naked eye. The brightness components 3.1mag and 3.6mag lie at a distance of 8'. The brighter of the two is an eclipsing binary whose brightness varies between 2.9 and 3.2mag over an interval of 34 hours. \ No newline at end of file diff --git a/en/star/hr6271.md b/en/star/hr6271.md index 4df6c6d82..dfb03a4ad 100644 --- a/en/star/hr6271.md +++ b/en/star/hr6271.md @@ -3,6 +3,7 @@ name: ζ Sco constellation: Sco created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:34:30.187630 --- +a wide visual pair of unrelated stars distinguishable even with the naked eye. It consists of the blue-white giant ζ1, which is the brightest member (4.7mag) of the magnificent open cluster NGC 6231 . ζ2 is a red giant of 3.6mag, located at a much closer distance to us - 132ly. \ No newline at end of file diff --git a/en/star/hr6370.md b/en/star/hr6370.md index a85d0650b..bbf4a15ae 100644 --- a/en/star/hr6370.md +++ b/en/star/hr6370.md @@ -3,6 +3,7 @@ name: Alrakis (μ Dra) constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:21:54.386947 --- +a well-known binary whose two white components have a brightness of about 5.65mag, but appear to the naked eye as a single 5th magnitude point. The mutual orbital period of the two partners is over 812 years. By the end of the 20th century, the two stars were about 1.9" apart and required higher magnification to separate them. This is therefore a good test for a good 100mm telescope. The system is 89 light years from Earth. \ No newline at end of file diff --git a/en/star/hr6406.md b/en/star/hr6406.md index a7a830a86..a49263c04 100644 --- a/en/star/hr6406.md +++ b/en/star/hr6406.md @@ -3,6 +3,7 @@ name: Ras Algethi (α Her) constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:21:30.994975 --- +a bright red star almost on the border with Ophiuchus, a giant whose brightness varies irregularly between 3.1mag and 3.9mag, but often only between 3.3mag and 3.7mag. The period is 90 to 100 days. Suitable comparison stars are ι and κ Ophiuchi, which lie about 6.5 degrees to the southwest and have brightnesses of 4.3mag and 3.2mag, respectively. Alpha Herculis is also a binary whose second fifth-magnitude component, 4.7" away, is visible even in small telescopes with a 6 cm diameter objective. It has a greenish tint that contrasts nicely with the red giant. \ No newline at end of file diff --git a/en/star/hr6410.md b/en/star/hr6410.md index 156435fc8..3e127c8af 100644 --- a/en/star/hr6410.md +++ b/en/star/hr6410.md @@ -3,6 +3,7 @@ name: δ Her constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:18:48.335009 --- +a well-known optical binary star whose faint blue components exhibit quite different proper motion, with the result that the relative positions of the two stars have changed quite significantly over time. In 1830 their mutual distance was 26", in 1960 they came as close as 9" and since then their distance has been gradually increasing again. The main star has a brightness of 3.1mag and the guide star 8.2mag. A telescope with a 6 cm diameter objective is sufficient to resolve this rare pair. \ No newline at end of file diff --git a/en/star/hr6431.md b/en/star/hr6431.md index d3da462e6..9f6d11a28 100644 --- a/en/star/hr6431.md +++ b/en/star/hr6431.md @@ -3,6 +3,7 @@ name: 68 Her constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:22:38.320163 --- +an occulting variable star. It's actually two strongly flattened, nearly equal-sized stars that orbit each other in 2.051 days. As a result, we observe light changes in 68 Her from 4.7mag to 5.4mag. The luminosities of the two stars are quite different. The brighter is 260 times brighter than the Sun and the fainter is only 100 times brighter. Their masses are 7.5 and 2.9 times the mass of the Sun. In terms of size, the two stars are about 6 times the diameter of the Sun. \ No newline at end of file diff --git a/en/star/hr6536.md b/en/star/hr6536.md index 6e0a94adc..20a95b66d 100644 --- a/en/star/hr6536.md +++ b/en/star/hr6536.md @@ -3,6 +3,7 @@ name: Rastaban (β Dra) constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:17:53.741920 --- +the star has a brightness of 2.8mag and is 380 light years away. Together with Etamine, they form the "dragon's eyes". Beta Draconis is a double star consisting of a main yellow component and a faint 14mag companion at an angular distance of 4.2", which is not easily seen. \ No newline at end of file diff --git a/en/star/hr6555.md b/en/star/hr6555.md index 23dfa8ccf..5d6ac01cb 100644 --- a/en/star/hr6555.md +++ b/en/star/hr6555.md @@ -3,6 +3,7 @@ name: Kuma (ν Dra) constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:19:09.498753 --- +a wide binary star composed of two nearly equally bright white stars (4.9mag) located 61.9" apart. Even observing this pair in trinary provides an exquisite view. The two components are 99 light years apart. \ No newline at end of file diff --git a/en/star/hr6623.md b/en/star/hr6623.md index 4c9a4ac58..fceb9e88e 100644 --- a/en/star/hr6623.md +++ b/en/star/hr6623.md @@ -3,6 +3,7 @@ name: μ Her constellation: Her created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-07 15:19:32.187322 --- +the main and strikingly yellow 3.4mag component has a 10th magnitude companion at a distance of 33.8", which is actually made up of two red dwarfs. \ No newline at end of file diff --git a/en/star/hr6705.md b/en/star/hr6705.md index 7a2342578..21836f768 100644 --- a/en/star/hr6705.md +++ b/en/star/hr6705.md @@ -3,6 +3,7 @@ name: Etamin (γ Dra) constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:17:35.298376 --- +the brightest star in the constellation, reaching 2mag and apparently orange. It is 154 light years from Earth and 471 times brighter than the Sun. In the past, the English astronomer James Bradley also observed it and used it to discover the aberration of light. \ No newline at end of file diff --git a/en/star/hr6918.md b/en/star/hr6918.md index d5ce3cb01..c53adf5ea 100644 --- a/en/star/hr6918.md +++ b/en/star/hr6918.md @@ -3,6 +3,7 @@ name: 59 Ser constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:28:06.642624 --- +an unequally bright but attractive double star with a yellow 5.3mag and white 7.6mag component located in a particularly dark region of the Great Rift. The mutual separation of this pair is 3.8". \ No newline at end of file diff --git a/en/star/hr6923.md b/en/star/hr6923.md index 5fbddf96d..17224bc4f 100644 --- a/en/star/hr6923.md +++ b/en/star/hr6923.md @@ -3,6 +3,7 @@ name: 39 Dra constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:20:13.336570 --- +a multiple star, which a small telescope and even a triad show as a wide pair of stars with 5mag and 8mag brightness. Inspection of the brighter star at high magnification reveals yet another (and much closer) component that also reaches 8mag. \ No newline at end of file diff --git a/en/star/hr7141.md b/en/star/hr7141.md index a6aa4a991..e3dd68a64 100644 --- a/en/star/hr7141.md +++ b/en/star/hr7141.md @@ -3,6 +3,7 @@ name: Alya (θ Ser) constellation: Ser created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:26:35.104696 --- +a double star at the eastern edge of the constellation. The pair of blue-white stars, 4.6mag and 5.1mag, are 22.3" apart, so a conventional triad will be sufficient to distinguish them. Both belong to spectral class A5 and are physically related. They lie at a distance of 86ly. \ No newline at end of file diff --git a/en/star/hrNone.md b/en/star/hrNone.md index ef4dee384..275e73f99 100644 --- a/en/star/hrNone.md +++ b/en/star/hrNone.md @@ -3,6 +3,7 @@ name: RY Dra constellation: Dra created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-05 20:22:47.459775 --- +a variable star with a deep red hue. It is one of the cool carbon stars, notable for the carbon molecules present in its atmosphere. The brightness of the star varies between 9.4mag and 11.4mag over a period of 172 days. In a larger telescope it is always found in the middle of the southeastern side of the isosceles triangle of stars 7, 8 and 9 Draconis. \ No newline at end of file diff --git a/en/star/π1_UMi.md b/en/star/π1_UMi.md index cd0f55c31..ef20f75e7 100644 --- a/en/star/π1_UMi.md +++ b/en/star/π1_UMi.md @@ -3,6 +3,7 @@ name: π1 UMi constellation: UMi created_by: 8mag created_date: 2022-01-21 17:00:00 -updated_by: 8mag -updated_date: 2022-01-21 17:00:00 +updated_by: skybber +updated_date: 2022-02-08 15:23:22.078731 --- +double star, the main column is yellow (6,6mag) and the companion is white (7,3mag). They lie at a mutual distance of 31.1" and actually orbit each other in 150 years. The star field around it is made up of a string of fairly bright stars, a ring and an arc of three fainter stars. \ No newline at end of file