Gamma Pictoris
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pictor |
| Right ascension | 05h 49m 49.66006s |
| Declination | −56° 09′ 59.9978″ |
| Apparent magnitude (V) | 4.50 |
| Characteristics | |
| Evolutionary stage | Red clump |
| Spectral type | K1 III |
| U−B color index | +0.98 |
| B−V color index | +1.10 |
| Astrometry | |
| Radial velocity (Rv) | 17.29±0.18 km/s |
| Proper motion (μ) | RA: +82.36 mas/yr Dec.: −72.85 mas/yr |
| Parallax (π) | 17.5764±0.1536 mas |
| Distance | 186 ± 2 ly (56.9 ± 0.5 pc) |
| Absolute magnitude (MV) | 0.83 |
| Details | |
| Mass | 1.47±0.06 M☉ |
| Radius | 11.22±0.08 R☉ |
| Luminosity | 53.46±0.75 L☉ |
| Surface gravity (log g) | 2.56±0.22 cgs |
| Temperature | 4,670±40 K |
| Metallicity [Fe/H] | 0.15±0.20 dex |
| Rotational velocity (v sin i) | 6.4 km/s |
| Age | 3.09±0.16 Gyr |
| 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, orange-hued star in the southern constellation of Pictor. It is a faintly visible to the naked eye with an apparent visual magnitude of 4.50. Based upon an annual parallax shift of 17.58 mas as seen from Earth, this star is located about 185 light-years from the Sun. It is moving away from the Sun with a radial velocity of +17.29 km/s.
This is an evolved K-type giant star with a stellar classification of K1 III. It has 1.5 times the mass of the Sun, while its diameter has been measured using interferometry as around 11 times that of the Sun. The star is radiating 53 times the Sun's luminosity from its enlarged photosphere at an effective temperature of around 4,670 K.