HD 39194
HD 39194 (Gliese 217.2; LHS 210) is a star located in the southern circumpolar constellation Mensa. It has an apparent magnitude of 8.07, making it readily visible in binoculars but not to the naked eye. The object is relatively close at a distance of 86 light years but is receding with a heliocentric radial velocity of 13.9 km/s.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Mensa |
| Right ascension | 05h 44m 31.9180s |
| Declination | −70° 08′ 36.858″ |
| Apparent magnitude (V) | 8.07±0.01 |
| Characteristics | |
| Spectral type | K0 V |
| U−B color index | +0.26 |
| B−V color index | +0.76 |
| Astrometry | |
| Radial velocity (Rv) | 13.90±0.10 km/s |
| Proper motion (μ) | RA: −309.273 mas/yr Dec.: +1238.862 mas/yr |
| Parallax (π) | 37.8235 ± 0.0206 mas |
| Distance | 86.23 ± 0.05 ly (26.44 ± 0.01 pc) |
| Absolute magnitude (MV) | +6.02 |
| Details | |
| Mass | 0.71 M☉ |
| Radius | 0.74 R☉ |
| Luminosity | 0.389 L☉ |
| Surface gravity (log g) | 4.61±0.05 cgs |
| Temperature | 5,205±23 K |
| Metallicity [Fe/H] | −0.61±0.02 dex |
| Rotational velocity (v sin i) | 2 km/s |
| Age | 11.7 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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