Global InformationGamma Trianguli Australis information
  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 15h 18m 54.58129s[1] |
| Declination | –68° 40′ 46.3680″[1] |
| Apparent magnitude (V) | +2.87[2] |
| Characteristics | |
| Evolutionary stage | Subgiant or giant star[3] |
| Spectral type | A1III[3] |
| U−B color index | –0.02[4] |
| B−V color index | +0.00[4] |
| Astrometry | |
| Radial velocity (Rv) | –3.0[2] km/s |
| Proper motion (μ) | RA: –65.816 mas/yr[1] Dec.: –31.187 mas/yr[1] |
| Parallax (π) | 17.1809 ± 0.3327 mas[1] |
| Distance | 190 ± 4 ly (58 ± 1 pc)[1] |
| Absolute magnitude (MV) | −0.89[5] |
| Details[3] | |
| Mass | 3.04 M☉ |
| Radius | 6.5 or 7 R☉ |
| Luminosity | 249[6] L☉ |
| Surface gravity (log g) | 3.39[7] cgs |
| Temperature | 8,225 K |
| Rotational velocity (v sin i) | 199[8] km/s |
| Age | 350 Myr |
| Other designations | |
γ TrA, CD−68° 1503, FK5 560, HD 135382, HIP 74946, HR 5671, SAO 253097[9] | |
| Database references | |
| SIMBAD | data |
Gamma Trianguli Australis, Latinized from γ Trianguli Australis, is a single,[10] white-hued star in the southern constellation of Triangulum Australe. Along with Alpha and Beta Trianguli Australis it forms a prominent triangular asterism that gives the constellation its name (Latin for southern triangle). It is the third-brightest member of this constellation with an apparent visual magnitude of +2.87.[2] Based upon parallax measurements, Gamma Trianguli Australis is located at a distance of about 190 light-years (58 parsecs) from Earth.[1]
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