Gamma Piscis Austrini
|
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Piscis Austrinus |
| Right ascension | 22h 52m 31.56s |
| Declination | −32° 52' 31.6" |
| Apparent magnitude (V) | +4.46 |
| Distance | 222 ly (68 pc) |
| Spectral type | A0III |
| Other designations | |
Gamma Piscis Austrini (Gamma PsA, γ Piscis Austrini, γ PsA) is multiple star system in constellation of Piscis Austrinus, with an apparent magnitude of +4.46. The primary component is a white A-type giant. It is approximately 222 light years from Earth. With a temperature estimated at 10,600 Kelvin, the star shines with a rather decent luminosity of 81 times that of the Sun.[1]
Gamma Piscis Austrini is moving through the Galaxy at a speed of 24.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 21,600 and 30,800 light years from the center of the Galaxy.[2]
Gamma Piscis Austrini came closest to the Sun 1.8 million years ago when it had brightened to magnitude 3.78 from a distance of 157 light years.[2]
Naming
In Chinese, 敗臼 (Bài Jiù), meaning Decayed Mortar, refers to an asterism consisting of refers to an asterism consisting of γ Piscis Austrini, γ Gruis, λ Gruis and 19 Piscis Austrini. Consequently, γ Piscis Austrini itself is known as 敗臼三 (Bài Jiù sān, English: the Third Star of Decayed Mortar.)[3]