Omicron Geminorum
Star in the constellation Gemini / From Wikipedia, the free encyclopedia
Omicron Geminorum (ο Geminorum, abbreviated Omicron Gem, ο Gem), also named Jishui,[10] is a solitary[11] star in the constellation of Gemini. It is faintly visible to the naked eye with an apparent visual magnitude of 4.90.[2] Based upon an annual parallax shift of 19.61 mas,[1] it is located at a distance of 166 light-years from the Sun.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Gemini |
Right ascension | 07h 39m 09.93286s[1] |
Declination | +34° 35′ 03.6443″[1] |
Apparent magnitude (V) | 4.90[2] |
Characteristics | |
Spectral type | F3 III[3] |
U−B color index | +0.09[2] |
B−V color index | +0.41[2] |
Astrometry | |
Radial velocity (Rv) | +7.3[4] km/s |
Proper motion (μ) | RA: -33.42[1] mas/yr Dec.: -118.17[1] mas/yr |
Parallax (π) | 19.61 ± 0.30 mas[1] |
Distance | 166 ± 3 ly (51.0 ± 0.8 pc) |
Absolute magnitude (MV) | 1.35[5] |
Details | |
Radius | 3.7[6] R☉ |
Luminosity | 24[7] L☉ |
Surface gravity (log g) | 3.56[8] cgs |
Temperature | 6,309[7] K |
Metallicity [Fe/H] | +0.12[5] dex |
Rotational velocity (v sin i) | 91.1[8] km/s |
Age | 1[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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