HD 85951
HD 85951 (HR 3923), formally named Felis /ˈfiːlɪs/, is a solitary orange hued star in the constellation Hydra. It has an apparent magnitude of 4.94, making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements, the object is about 570 light-years away from the Sun and is receding with a heliocentric radial velocity of 50 km/s.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hydra |
| Right ascension | 09h 54m 52.2045s |
| Declination | −19° 00′ 33.620″ |
| Apparent magnitude (V) | 4.94 |
| Characteristics | |
| Evolutionary stage | AGB |
| Spectral type | K5 III |
| U−B color index | +1.93 |
| B−V color index | +1.57 |
| Astrometry | |
| Radial velocity (Rv) | 50±4.2 km/s |
| Proper motion (μ) | RA: −45.386 mas/yr Dec.: −40.456 mas/yr |
| Parallax (π) | 5.6789 ± 0.2214 mas |
| Distance | 570 ± 20 ly (176 ± 7 pc) |
| Absolute magnitude (MV) | −1.43 |
| Details | |
| Mass | 6.40+1.2 −0.4 M☉ |
| Radius | 56.7 R☉ |
| Luminosity | 721±32 L☉ |
| Surface gravity (log g) | 1.3±0.04 cgs |
| Temperature | 3,875±39 K |
| Metallicity [Fe/H] | −0.18±0.07 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
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