1004 B
| name | constellation | created_by | created_date | updated_by | updated_date |
|---|---|---|---|---|---|
| Tycho's Supernova | Cas | 8mag | 2022-01-21 17:00:00 | skybber | 2022-01-23 10:15:24.883309 |
or Supernova 1572, one of three supernovae observed and documented to have erupted in our Galaxy in the distant past. It was named after the Danish astronomer Tycho de Brahe, who observed its explosion on November 11, 1572, and the course of its brightness until it disappeared from the sky (it was also observed by Tadeáš Hájek of Hájek). At that time he did not know that the star exploded at a distance of 8,000 light years. The star shone in close proximity to the northwest of κ Cas. At its maximum, it was equal in apparent brightness to Venus, reaching a maximum brightness of -4.0mag, and could be seen even during the day. Then its brightness declined, but it could not be seen with the naked eye for 16 months. Today it is again a star of apparent brightness less than 19mag, with an expanding nebula, radio and X-ray source.