Back الزورق (نجم) Arabic Zaurak AST Zaurak Czech Zaurak German Zaurak Spanish Gamma Eridani French זאורק HE गामा ऍरिडानी तारा Hindi Gamma Eridani ID Zaurak Italian
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| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 58m 01.76695s[1] |
| Declination | −13° 30′ 30.6698″[1] |
| Apparent magnitude (V) | 2.88 - 2.96[2] |
| Characteristics | |
| Evolutionary stage | AGB[3] |
| Spectral type | M0III-IIIb[4] |
| U−B color index | +1.96[5] |
| B−V color index | +1.58[5] |
| Variable type | Lb?[2] |
| Astrometry | |
| Radial velocity (Rv) | 60.81±0.25[6] km/s |
| Proper motion (μ) | RA: +61.57[1] mas/yr Dec.: −113.11[1] mas/yr |
| Parallax (π) | 17.0016±0.2254 mas[7] |
| Distance | 192 ± 3 ly (58.8 ± 0.8 pc) |
| Absolute magnitude (MV) | −1.19[8] |
| Details | |
| Mass | 1.55[9] M☉ |
| Radius | 58.7±0.8[10] R☉ |
| Luminosity | 634.2±28.6[10] L☉ |
| Surface gravity (log g) | 1.52[10] cgs |
| Temperature | 3,779±34[10] K |
| Metallicity [Fe/H] | +0.00[10] dex |
| Rotational velocity (v sin i) | 3.8[6] km/s |
| Other designations | |
Zaurac, Gamma Eridani, Gamma Eri, γ Eridani, γ Eri, 34 Eridani, 34 Eri, HD 25025, HIP 18543, HR 1231[11] | |
| Database references | |
| SIMBAD | data |
Gamma Eridani (γ Eridani, abbreviated Gamma Eri, γ Eri), formally named Zaurak /ˈzɔːræk/,[12][13] is a variable star in the constellation of Eridanus. It is visible to the naked eye with an apparent visual magnitude that varies around 2.9, and lies at a distance of about 203 light years from the Sun, as determined by the Hipparcos astrometry satellite.
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