82 G. Eridani
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 19m 55.651s |
| Declination | −43° 04′ 11.22″ |
| Apparent magnitude (V) | 4.254 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | G6 V |
| U−B color index | +0.22 |
| B−V color index | +0.71 |
| Astrometry | |
| Radial velocity (Rv) | 87.76±0.13 km/s |
| Proper motion (μ) | RA: 3,035.017 mas/yr Dec.: 726.964 mas/yr |
| Parallax (π) | 165.5242±0.0784 mas |
| Distance | 19.704 ± 0.009 ly (6.041 ± 0.003 pc) |
| Absolute magnitude (MV) | 5.34 |
| Details | |
| Mass | 0.79±0.01 M☉ |
| Radius | 0.93±0.03 R☉ |
| Luminosity | 0.6869±0.0026 L☉ |
| Habitable zone inner limit | 0.6322±0.0020 AU |
| Habitable zone outer limit | 1.5236±0.0091 AU |
| Surface gravity (log g) | 4.39±0.03 cgs |
| Temperature | 5,473±48 K |
| Metallicity [Fe/H] | −0.42±0.02 dex |
| Rotation | ~39 days |
| Rotational velocity (v sin i) | <2 km/s |
| Age | 5.76±0.66, 11.3 Gyr |
| Other designations | |
| e Eri, e Eridani, CD−43°1028, FK5 119, GJ 139, HD 20794, HIP 15510, HR 1008, SAO 216263, G 82 G. Eridani, 82 G. Eri, LHS 19, LTT 1583 | |
| Database references | |
| SIMBAD | The star |
| planet b | |
| planet c | |
| planet d | |
| Exoplanet Archive | data |
| ARICNS | data |
82 G. Eridani (HD 20794, Gliese 139, e Eridani) is a star 19.7 light-years (6.0 parsecs) away from Earth in the constellation Eridanus. It is a main-sequence star with a stellar classification of G6 V, and it hosts a system of three confirmed planets and a dust disk.