Star
Surrounded by a debris disk that once hosted a directly imaged exoplanet candidate, since found likely to be a dust cloud.
| Type | Star |
|---|---|
| Distance from Earth | 25.1 ly |
| Diameter | 2,563,000 km |
| Mass | 3.82 × 10³⁰ kg |
| Temperature | 8,317°C |
| Apparent magnitude | 1.16 |
| Redshift | 0 |
| Hemisphere | Southern |
| 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 2,563,000 km across, Fomalhaut is 1.8 times the diameter of the Sun.
Its mass is 1.9 times the mass of the Sun.
The light reaching us from Fomalhaut tonight left it around 25 years ago.
Its surface sits at 8,590 K, hotter 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