9 lines
933 B
Markdown
9 lines
933 B
Markdown
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name: Sírius (α CMa)
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constellation: CMa
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created_by: 8mag
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created_date: 2022-01-21 17:00:00
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updated_by: skybber
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updated_date: 2022-01-22 21:46:28.971142
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---
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the brightest star in the sky, known to all ancient peoples. Orion's belt extends downwards towards Sirius. There, near the horizon, we see, especially on cold winter nights, a bright blue-white star twinkling with the action of the restless air in the atmosphere. After all, the Greek word "Sirios" already means flickering, sparkling. Sirius has a brightness of -1.5mag, but it's not particularly bright compared to other stars. In fact, it owes everything to its relatively close proximity to us - 8.7 light-years - which puts it fifth in the list of our nearest stars (if you don't count the guide stars). It has 23 times the luminosity, 1.8 times the diameter and 2.35 times the mass of our Sun. Its surface temperature of 10,000 K causes its blue-white colouration. |