HD 4308
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Tucana |
| Right ascension | 00h 44m 39.26721s |
| Declination | −65° 38′ 58.2777″ |
| Apparent magnitude (V) | 6.544±0.005 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | G6VFe-0.9 |
| Apparent magnitude (B) | 7.193 |
| Apparent magnitude (V) | 6.552 |
| Apparent magnitude (J) | 5.366±0.024 |
| Apparent magnitude (H) | 5.101±0.016 |
| Apparent magnitude (K) | 4.945±0.020 |
| Astrometry | |
| Radial velocity (Rv) | +95.251±0.0162 km/s |
| Proper motion (μ) | RA: +157.639 mas/yr Dec.: −741.913 mas/yr |
| Parallax (π) | 45.3559±0.0178 mas |
| Distance | 71.91 ± 0.03 ly (22.048 ± 0.009 pc) |
| Absolute magnitude (MV) | 4.83 |
| Details | |
| Mass | 0.95±0.05 M☉ |
| Radius | 1.04±0.03 R☉ |
| Luminosity | 1.03±0.01 L☉ |
| Surface gravity (log g) | 4.38±0.02 cgs |
| Temperature | 5,714±61 K |
| Metallicity [Fe/H] | −0.35±0.07 dex |
| Rotational velocity (v sin i) | 1.0±1.0 km/s |
| Age | 10.0+0.5 −1.0 Gyr |
| Other designations | |
| CD−66°38, GC 897, GJ 31.5, GJ 9028, HD 4308, HIP 3497, SAO 248244, PPM 352003, LFT 71, LHS 1139, LPM 40, LTT 416, TYC 8847-598-1, GCRV 50662, 2MASS J00443925-6538581 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
HD 4308 is a single star with a planetary system in the southern constellation of Tucana. It has a yellow hue and is a challenge to view with the naked eye even under good seeing conditions, having an apparent visual magnitude of 6.54. This object is located at a distance of 72 light-years, as determined from parallax measurements. It is a population II star and is considered to be a member of the thick disk. The star is receding from the Sun with a radial velocity of +95 km/s.