Alpha Corvi
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Corvus |
| Right ascension | 12h 08m 24.81727s |
| Declination | −24° 43′ 43.9521″ |
| Apparent magnitude (V) | 4.03 |
| Characteristics | |
| Spectral type | F1 V + M4 V |
| U−B color index | +0.00 |
| B−V color index | +0.34 |
| Variable type | Gamma Doradus? |
| Astrometry | |
| Radial velocity (Rv) | +3.0 km/s |
| Proper motion (μ) | RA: +96.976 mas/yr Dec.: −40.023 mas/yr |
| Parallax (π) | 66.7696±0.1804 mas |
| Distance | 48.8 ± 0.1 ly (14.98 ± 0.04 pc) |
| Absolute magnitude (MV) | 3.25 |
| Details | |
| Mass | 1.34+0.04 −0.06 M☉ |
| Radius | 1.42±0.03 R☉ |
| Luminosity | 4.31±0.23 L☉ |
| Surface gravity (log g) | 4.192±0.030 cgs |
| Temperature | 6,985+64 −66 K |
| Metallicity [Fe/H] | −0.04 dex |
| Rotational velocity (v sin i) | 16.9±1.5 km/s |
| Age | 1.2–1.58 Gyr |
| Other designations | |
| Alchiba, Al Minliar al Ghurab, Al Chiba, 1 Crv, CD−24°10174, GCTP 2796.00, GJ 455.3, GJ 9389, HD 105452, HIP 59199, HR 4623, SAO 180505 | |
| Database references | |
| SIMBAD | data |
Alpha Corvi (α Corvi, abbreviated Alpha Crv, α Crv), also named Alchiba /ˈælkɪbə/, is an F-type main-sequence star and, despite its "alpha" designation, is the fifth-brightest star in the constellation of Corvus. Based on parallax measurements made by the Gaia mission, it is approximately 49 light-years from the Sun.