Gamma1 Octantis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Octans |
| Right ascension | 23h 52m 06.47318s |
| Declination | −82° 01′ 07.7636″ |
| Apparent magnitude (V) | 5.10 |
| Characteristics | |
| Evolutionary stage | red clump |
| Spectral type | G7III |
| U−B color index | +0.60 |
| B−V color index | +0.92 |
| Astrometry | |
| Radial velocity (Rv) | +15.4±0.1 km/s |
| Proper motion (μ) | RA: −45.670 mas/yr Dec.: −15.666 mas/yr |
| Parallax (π) | 12.1790±0.0552 mas |
| Distance | 268 ± 1 ly (82.1 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.55 |
| Details | |
| Mass | 1.81 M☉ |
| Radius | 10.3 R☉ |
| Luminosity | 60 L☉ |
| Surface gravity (log g) | 2.64 cgs |
| Temperature | 5,017 K |
| Metallicity [Fe/H] | −0.34 dex |
| Rotational velocity (v sin i) | 1.8 km/s |
| Other designations | |
| γ1 Oct, 86 G. Octantis, CPD−82°905, FK5 3997, GC 33107, HD 223647, HIP 117689, HR 9032, SAO 258989 | |
| Database references | |
| SIMBAD | data |
Gamma1 Octantis, Latinized from γ1 Octantis, is a single, yellow-hued star in the constellation which includes the southern celestial pole, Octans. Its apparent visual magnitude is 5.10, meaning that in good conditions it is bright enough to be faintly visible to the naked eye.