Star
An orange giant that will pass close to the Sun in 1.5 million years.
| Type | Star |
|---|---|
| Distance from Earth | 150 ly |
| Diameter | 66,995,910 km |
| Mass | 3.42 × 10³⁰ kg |
| Temperature | 3,657°C |
| Apparent magnitude | 2.23 |
| Redshift | 0 |
| Hemisphere | Northern |
| Discovered | 150 |
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 66,995,910 km across, Eltanin is 48 times the diameter of the Sun.
Its mass is 1.7 times the mass of the Sun.
The light reaching us from Eltanin tonight left it around 150 years ago.
Its surface sits at 3,930 K, cooler than the Sun at 5,772 K, which is what sets its colour.
It has been on record since the year 150.
Play today's Cosmodle