Alpha Corvi
Star in the constellation Corvus / From Wikipedia, the free encyclopedia
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Alpha Corvi (α Corvi, abbreviated Alpha Crv, α Crv), also named Alchiba /ˈælkɪbə/,[12] 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.[1]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Corvus |
Right ascension | 12h 08m 24.81727s[1] |
Declination | −24° 43′ 43.9521″[1] |
Apparent magnitude (V) | 4.03[2] |
Characteristics | |
Spectral type | F1 V[3] + M4 V[4] |
U−B color index | +0.00[2] |
B−V color index | +0.34[2] |
Variable type | Gamma Doradus?[5] |
Astrometry | |
Radial velocity (Rv) | +3.0[6] km/s |
Proper motion (μ) | RA: +96.976 mas/yr[1] Dec.: −40.023 mas/yr[1] |
Parallax (π) | 66.7696 ± 0.1804 mas[1] |
Distance | 48.8 ± 0.1 ly (14.98 ± 0.04 pc) |
Absolute magnitude (MV) | 3.25[7] |
Details | |
Mass | 1.32[8] M☉ |
Radius | 1.373[9] R☉ |
Luminosity | 4.145[9] L☉ |
Surface gravity (log g) | 4.27[8] cgs |
Temperature | 7,035[9] K |
Metallicity [Fe/H] | −0.04[8] dex |
Rotational velocity (v sin i) | 16.9 ± 1.5[10] km/s |
Age | 1.2–1.58[8] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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