Star
A yellow supergiant and the brightest star in Aquarius, whose name means luckiest of the lucky.
| Type | Star |
|---|---|
| Distance from Earth | 540 ly |
| Diameter | 66,681,500 km |
| Mass | 1.27 × 10³¹ kg |
| Temperature | 5,335°C |
| Apparent magnitude | 2.87 |
| 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 66,681,500 km across, Sadalsuud is 48 times the diameter of the Sun.
Its mass is 6.4 times the mass of the Sun.
The light reaching us from Sadalsuud tonight left it around 540 years ago.
Its surface sits at 5,608 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