Gamma Reticuli
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Reticulum |
| Right ascension | 04h 00m 53.80860s |
| Declination | −62° 09′ 33.4250″ |
| Apparent magnitude (V) | 4.5 |
| Characteristics | |
| Evolutionary stage | asymptotic giant branch |
| Spectral type | M4 III |
| U−B color index | +1.81 |
| B−V color index | +1.66 |
| Variable type | SR |
| Astrometry | |
| Radial velocity (Rv) | −7.0±2.7 km/s |
| Proper motion (μ) | RA: +3.03 mas/yr Dec.: +34.67 mas/yr |
| Parallax (π) | 6.95±0.11 mas |
| Distance | 469 ± 7 ly (144 ± 2 pc) |
| Absolute magnitude (MV) | −1.31 |
| Details | |
| Mass | 1.5−2 M☉ |
| Radius | 115 R☉ |
| Luminosity | 1,846 L☉ |
| Surface gravity (log g) | 0.8 cgs |
| Temperature | 3,599 K |
| Metallicity [Fe/H] | 0.0 dex |
| Other designations | |
| γ Ret, CD−62°149, HD 25705, HIP 18744, HR 1264, SAO 248925 | |
| Database references | |
| SIMBAD | data |
Gamma Reticuli (Gamma Ret, γ Reticuli, γ Ret) is a solitary star in the southern constellation of Reticulum. With an apparent visual magnitude of 4.5, it can be faintly seen with the naked eye. Based upon an annual parallax shift of 6.95 mas, it is located roughly 469 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.08 due to interstellar dust.
This is an evolved red giant star, currently on the asymptotic giant branch, with a stellar classification of M4 III. It is a semiregular variable with a period of 25 days. Gamma Reticuli has 1.5−2 times the mass of the Sun, 115 times the Sun's radius, and radiates 1,846 times the solar luminosity from its outer atmosphere at an effective temperature of 3,450 K.
Gamma Reticuli is moving through the Galaxy at a speed of 24.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,100 and 39,200 light years from the center of the Galaxy.