Star
A hot blue-white star and the brightest in the crane constellation Grus.
| Type | Star |
|---|---|
| Distance from Earth | 100 ly |
| Diameter | 4,730,760 km |
| Mass | 7.96 × 10³⁰ kg |
| Temperature | 13,647°C |
| Apparent magnitude | 1.74 |
| Redshift | 0 |
| Hemisphere | Southern |
| Discovered | 1597 |
Stars spend most of their lives fusing hydrogen into helium in their core, and it's the balance between that outward pressure and gravity pulling inward that fixes how big and how bright a star gets.
At 4,730,760 km across, Alnair is 3.4 times the diameter of the Sun.
Its mass is 4.0 times the mass of the Sun.
The light reaching us from Alnair tonight left it around 100 years ago.
Its surface sits at 13,920 K, hotter than the Sun at 5,772 K, which is what sets its colour.
It has been on record since 1597.
Play today's Cosmodle