Beta Piscis Austrini
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Piscis Austrinus |
| Right ascension | 22h 31m 30.33038s |
| Declination | −32° 20′ 45.8653″ |
| Apparent magnitude (V) | +4.29 (4.29 + 6.22) |
| Characteristics | |
| Spectral type | A1 V + A2 V |
| U−B color index | +0.02 |
| B−V color index | +0.01 |
| Astrometry | |
| Radial velocity (Rv) | 5.5±0.5 km/s |
| Proper motion (μ) | RA: +59.12 mas/yr Dec.: −18.83 mas/yr |
| Parallax (π) | 22.84±0.21 mas |
| Distance | 143 ± 1 ly (43.8 ± 0.4 pc) |
| Absolute magnitude (MV) | 1.00 |
| Details | |
| Mass | 2.33±0.07 M☉ |
| Radius | 2.10 R☉ |
| Luminosity | 37 L☉ |
| Surface gravity (log g) | 4.12±0.03 cgs |
| Temperature | 9,638 K |
| Rotational velocity (v sin i) | 30 km/s |
| Age | 339 Myr |
| Other designations | |
| β PsA, 17 Piscis Austrini, CD−32°17126, FK5 1592, HD 213398, HIP 111188, HR 8576, SAO 213883, WDS J22315-3221A | |
| Database references | |
| SIMBAD | data |
Beta Piscis Austrini is a binary star system in the southern constellation of Piscis Austrinus that makes part of a triple star system. Its name is a Bayer designation that is Latinized from β Piscis Austrini, and abbreviated Beta PsA or β PsA. It is visible to the naked eye with an apparent visual magnitude of +4.29. Based upon an annual parallax shift of 22.84 mas as seen from the Earth, the star is located 143 light years from the Sun. These coordinates are a source of X-ray emission with a luminosity of 88.5×1020 W, which is most likely coming from a source other than the A-type stars.