Global InformationOmicron1 Eridani information
 A light curve for Omicron1 Eridani, plotted from TESS data[1] | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 04h 11m 51.93956s[2] |
| Declination | −06° 50′ 15.2864″[2] |
| Apparent magnitude (V) | 4.04[3] |
| Characteristics | |
| Spectral type | F0 III[4] |
| U−B color index | +0.10[3] |
| B−V color index | +0.32[3] |
| Variable type | δ Scuti[5] |
| Astrometry | |
| Proper motion (μ) | RA: +10.76[2] mas/yr Dec.: +81.92[2] mas/yr |
| Parallax (π) | 26.80 ± 0.32 mas[2] |
| Distance | 122 ± 1 ly (37.3 ± 0.4 pc) |
| Absolute magnitude (MV) | +1.18[6] |
| Details | |
| Mass | 1.95[5] M☉ |
| Radius | 3.7±0.1[5] R☉ |
| Luminosity | 27[5] L☉ |
| Surface gravity (log g) | 3.39[4] cgs |
| Temperature | 6,963[4] K |
| Metallicity [Fe/H] | −0.01[4] dex |
| Rotational velocity (v sin i) | 108.1[7] km/s |
| Other designations | |
Beid, ο1 Eri, 38 Eri, BD−07°764, FK5 154, HD 26574, HIP 19587, HR 1298, SAO 131019[8] | |
| Database references | |
| SIMBAD | data |
Omicron1 Eridani (ο1 Eridani, abbreviated Omicron1 Eri, ο1 Eri), also named Beid /ˈbaɪd/,[9][10] is a variable star in the constellation of Eridanus. With an average apparent visual magnitude of 4.04,[3] it is visible to the naked eye on a clear, dark night. Based upon parallax measurements, it lies approximately 122 light-years from the Sun.
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