Back 82 Eridani AST 82.G Eridani BS 82 G. Eridani German 82 Eridani Spanish ۸۲ جوی Persian 82 Eridani Finnish 82 Eridani French 82 G. Eridani ID 82 Eridani Italian エリダヌス座82番星 Japanese
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 19m 55.651s[1] |
| Declination | −43° 04′ 11.22″[1] |
| Apparent magnitude (V) | 4.254[2] |
| Characteristics | |
| Spectral type | G6 V[3] |
| U−B color index | +0.22[4] |
| B−V color index | +0.71[4] |
| Astrometry | |
| Radial velocity (Rv) | 87.76±0.13[1] km/s |
| Proper motion (μ) | RA: 3035.017 mas/yr[1] Dec.: 726.964 mas/yr[1] |
| Parallax (π) | 165.5242±0.0784 mas[1] |
| Distance | 19.704 ± 0.009 ly (6.041 ± 0.003 pc) |
| Absolute magnitude (MV) | 5.34[2] |
| Details[5] | |
| 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[6] K |
| Metallicity [Fe/H] | −0.42±0.02 dex |
| Rotation | ~39 days |
| Rotational velocity (v sin i) | <2[7] km/s |
| Age | 5.76±0.66,[8] 11.3[2] Gyr |
| Other designations | |
| 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.
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