Beta Trianguli Australis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 15h 55m 08.56206s |
| Declination | −63° 25′ 50.6155″ |
| Apparent magnitude (V) | 2.85 |
| Characteristics | |
| Spectral type | F1 V |
| U−B color index | +0.05 |
| B−V color index | +0.29 |
| Astrometry | |
| Radial velocity (Rv) | +0.4 km/s |
| Proper motion (μ) | RA: −188.66 mas/yr Dec.: −401.85 mas/yr |
| Parallax (π) | 80.79±0.16 mas |
| Distance | 40.37 ± 0.08 ly (12.38 ± 0.02 pc) |
| Absolute magnitude (MV) | +2.37 |
| Details | |
| Mass | 1.56 M☉ |
| Radius | 1.976±0.021 R☉ |
| Luminosity | 9.30±0.17 L☉ |
| Surface gravity (log g) | 4.219±0.066 cgs |
| Temperature | 7,171±35 K |
| Metallicity [Fe/H] | −0.29±0.10 dex |
| Rotational velocity (v sin i) | 69.63 km/s |
| Age | 674 Myr |
| Other designations | |
| β TrA, CD−63°1135, FK5 589, GJ 601, HD 141891, HIP 77952, HR 5897, SAO 253346, LTT 6339 | |
| Database references | |
| SIMBAD | data |
Beta Trianguli Australis, Latinized from β Trianguli Australis, is a star in the southern constellation of Triangulum Australe. It has an apparent visual magnitude of +2.85, making it the second-brightest star in the constellation. It is approximately 40.37 light-years (12.38 parsecs) from Earth and has an apparent visual magnitude of +2.85. This star has a relatively high rate of proper motion across the celestial sphere.