| |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 05h49m 49.66181s[1] |
| Declination | −56° 09′ 59.9808″[1] |
| Apparent magnitude (V) | 4.50[2] |
| Characteristics | |
| Spectral type | K1 III[3] |
| U−B color index | +0.98[4] |
| B−V color index | +1.10[4] |
| Astrometry | |
| Radial velocity (Rv) | +15.7±0.8[5] km/s |
| Proper motion (μ) | RA: +81.13[1] mas/yr Dec.: −71.12[1] mas/yr |
| Parallax (π) | 18.45 ± 0.15 mas[1] |
| Distance | 177 ± 1 ly (54.2 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.83[2] |
| Details | |
| Mass | 1.59[6] M☉ |
| Radius | 11[6] R☉ |
| Luminosity | 60.75[2] L☉ |
| Surface gravity (log g) | 2.56[6] cgs |
| Temperature | 4,600[7] K |
| Metallicity [Fe/H] | +0.15[2] dex |
| Rotational velocity (v sin i) | 6.4[8] km/s |
| Other designations | |
γ Pic, CPD−56° 946, FK5 1156, GC 7353, HD 39523, HIP 27530, HR 2042, SAO 234154 | |
| Database references | |
| SIMBAD | data |
Gamma Pictoris, Latinised from γ Pictoris, is a single,[9] orange-hued star in the southern constellationofPictor. It is a faintly visible to the naked eye with an apparent visual magnitude of 4.50.[2] Based upon an annual parallax shift of 18.45 mas as seen from Earth,[1] this star is located about 177 light-years from the Sun. It is moving away from the Sun with a radial velocity of +15.7 km/s.[5]
This is an evolved K-type giant star with a stellar classification of K1 III.[3] It has 1.59 times the mass of the Sun, while its diameter has been estimated as around 11 times that of the Sun.[6] The star is radiating 61[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of around 4,600 K.[7]
