Beta Corvi
Star in the constellation of Corvus / From Wikipedia, the free encyclopedia
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Beta Corvi or β Corvi, officially named Kraz (/ˈkræz/),[9] is the second-brightest star in the southern constellation of Corvus with an apparent visual magnitude of 2.647.[2] Based on parallax measurements obtained during the Hipparcos mission, it is about 146 light-years (45 parsecs) distant from the Sun.[1]
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Corvus |
Right ascension | 12h 34m 23.23484s[1] |
Declination | −23° 23′ 48.3374″[1] |
Apparent magnitude (V) | 2.647[2] |
Characteristics | |
Spectral type | G5 II[3] |
U−B color index | +0.586[2] |
B−V color index | +0.898[2] |
R−I color index | +0.44[4] |
Astrometry | |
Radial velocity (Rv) | −7.34±0.08 [5] km/s |
Proper motion (μ) | RA: +1.11[1] mas/yr Dec.: −56.56[1] mas/yr |
Parallax (π) | 22.39 ± 0.18 mas[1] |
Distance | 146 ± 1 ly (44.7 ± 0.4 pc) |
Absolute magnitude (MV) | –0.61[6] |
Details | |
Mass | 3.342±0.077[7] M☉ |
Radius | 15.841±0.72[7] R☉ |
Luminosity | 155[5] L☉ |
Surface gravity (log g) | 2.86[7] cgs |
Temperature | 5,354[7] K |
Metallicity [Fe/H] | 0.12±0.03[7] dex |
Rotational velocity (v sin i) | 2.58±0.55[5] km/s |
Age | 294±18[7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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