Star
An orange giant far more luminous than the Sun, brightest in the Southern Triangle.
| Type | Star |
|---|---|
| Distance from Earth | 390 ly |
| Diameter | 180,882,000 km |
| Mass | 1.39 × 10³¹ kg |
| Temperature | 3,877°C |
| Apparent magnitude | 1.91 |
| 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 180,882,000 km across, Atria is 130 times the diameter of the Sun.
Its mass is 7.0 times the mass of the Sun.
The light reaching us from Atria tonight left it around 390 years ago.
Its surface sits at 4,150 K, cooler than the Sun at 5,772 K, which is what sets its colour.
It has been on record since 1597.
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