37 Geminorum
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Gemini |
| Right ascension | 06h 55m 18.66671s |
| Declination | +25° 22′ 32.5038″ |
| Apparent magnitude (V) | 5.74 |
| Characteristics | |
| Spectral type | G0 V |
| U−B color index | +0.01 |
| B−V color index | 0.573±0.010 |
| Astrometry | |
| Radial velocity (Rv) | −14.94±0.15 km/s |
| Proper motion (μ) | RA: −37.882 mas/yr Dec.: +24.211 mas/yr |
| Parallax (π) | 57.2425±0.1005 mas |
| Distance | 57.0 ± 0.1 ly (17.47 ± 0.03 pc) |
| Absolute magnitude (MV) | 4.56 |
| Details | |
| Mass | 1.146 M☉ |
| Radius | 1.04+0.04 −0.08 R☉ |
| Luminosity | 1.310+0.003 −0.004 L☉ |
| Surface gravity (log g) | 4.29 cgs |
| Temperature | 6060+235 −118 K |
| Metallicity [Fe/H] | −0.25 dex |
| Rotation | 25.0 d |
| Rotational velocity (v sin i) | 1.89 km/s |
| Age | 5.49 Gyr |
| Other designations | |
| BD+25°1496, GJ 252, HD 50692, HIP 33277, HR 2569, SAO 78866 | |
| Database references | |
| SIMBAD | data |
37 Geminorum is a solitary Sun-like star located at the northwest part of the northern constellation of Gemini, about three degrees to the east of the bright star Epsilon Geminorum. The apparent visual magnitude of 37 Geminorum is 5.74, which is just bright enough to be visible to the naked eye on a dark night. It is located at a distance of 57 light years from the Sun based on parallax. This star is drifting closer with a radial velocity of −15 km/s, and is predicted to come as near as 13.8 light-years in approximately a million years. It is positioned close enough to the ecliptic to be subject to lunar occultations, such as happened on April 8, 1984.