Mu Piscis Austrini
|
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Piscis Austrinus |
| Right ascension | 22h 08m 22.95s |
| Declination | −32° 59' 18.2" |
| Apparent magnitude (V) | +4.50 |
| Distance | 130 ly (40 pc) |
| Spectral type | A2V |
| Other designations | |
Mu Piscis Austrini (Mu PsA, μ Piscis Austrini, μ PsA) is a white A-type main sequence star with an apparent magnitude of +4.50. It is approximately 130 light years from Earth.
Mu Piscis Austrini is moving through the Galaxy at a speed of 20 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,800 and 28,500 light years from the center of the Galaxy.[1]
Mu Piscis Austrini came closest to the Sun 1.2 million years ago when it had brightened to magnitude 4.06 from a distance of 111 light years.[1]
Naming
In Chinese, 天錢 (Tiān Qián), meaning Celestial Money, refers to an asterism consisting of refers to an asterism consisting of μ Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, ι Piscis Austrini and τ Piscis Austrini. Consequently, μ Piscis Austrini itself is known as 天錢四 (Tiān Qián sì, English: the Fifth Star of Celestial Money.)[2]