82 G. Eridani
Star in the constellation Eridanus / From Wikipedia, the free encyclopedia
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This article is about e Eridani. Not to be confused with ε Eridani.
82 G. Eridani (HD 20794, HR 1008, 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 at least three planets and a dust disk.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
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 | |
Mass | 0.70[5] M☉ |
Radius | 0.92[6] R☉ |
Luminosity | 0.74[7] L☉ |
Surface gravity (log g) | 4.40[8] cgs |
Temperature | 5,401[8] K |
Metallicity [Fe/H] | −0.40[8] dex |
Rotation | 33.19 ± 3.61 days[5] |
Rotational velocity (v sin i) | 4.0[9] km/s |
Age | 6.1;[10] 12.7[2] Gyr |
Other designations | |
Database references | |
SIMBAD | The star |
planet b | |
planet c | |
planet d | |
Exoplanet Archive | data |
ARICNS | data |
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