| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Mensa |
| Right ascension | 05h 44m 31.9180s[1] |
| Declination | −70° 08′ 36.858″[1] |
| Apparent magnitude (V) | 8.07±0.01[2] |
| Characteristics | |
| Spectral type | K0 V[3] |
| U−B color index | +0.26[4][5] |
| B−V color index | +0.76[4][5] |
| Astrometry | |
| Radial velocity (Rv) | 13.90±0.10[6] km/s |
| Proper motion (μ) | RA: −309.273 mas/yr[1] Dec.: +1238.862 mas/yr[1] |
| Parallax (π) | 37.8235 ± 0.0206 mas[1] |
| Distance | 86.23 ± 0.05 ly (26.44 ± 0.01 pc) |
| Absolute magnitude (MV) | +6.02[7] |
| Details | |
| Mass | 0.71[8] M☉ |
| Radius | 0.74[9] R☉ |
| Luminosity | 0.389[10] L☉ |
| Surface gravity (log g) | 4.61±0.05[11] cgs |
| Temperature | 5,205±23[11] K |
| Metallicity [Fe/H] | −0.61±0.02[11] dex |
| Rotational velocity (v sin i) | 2[12] km/s |
| Age | 11.7[8] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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,[2] making it readily visible in binoculars but not to the naked eye. The object is relatively close at a distance of 86 light years[1] but is receding with a heliocentric radial velocity of 13.9 km/s.[6]
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