Beta Corvi
Beta Corvi or β Corvi, officially named Kraz (/ˈkræz/), is the second-brightest star in the southern constellation of Corvus with an apparent visual magnitude of 2.647. Based on parallax measurements obtained during the Hipparcos mission, it is about 146 light-years (45 parsecs) distant from the Sun.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Corvus |
| Right ascension | 12h 34m 23.23484s |
| Declination | −23° 23′ 48.3374″ |
| Apparent magnitude (V) | 2.647 |
| Characteristics | |
| Spectral type | G5 II |
| U−B color index | +0.586 |
| B−V color index | +0.898 |
| R−I color index | +0.44 |
| Astrometry | |
| Radial velocity (Rv) | −7.6 km/s |
| Proper motion (μ) | RA: +1.11 mas/yr Dec.: −56.56 mas/yr |
| Parallax (π) | 22.39 ± 0.18 mas |
| Distance | 146 ± 1 ly (44.7 ± 0.4 pc) |
| Absolute magnitude (MV) | –0.61 |
| Details | |
| Mass | 3.7±0.1 M☉ |
| Radius | 16 R☉ |
| Luminosity | 164 L☉ |
| Surface gravity (log g) | 2.52±0.03 cgs |
| Temperature | 5,100±80 K |
| Metallicity [Fe/H] | –0.01 dex |
| Rotational velocity (v sin i) | 8 km/s |
| Age | 206 Myr |
| Other designations | |
Kraz, β Crv, Beta Corvi, Beta Crv, 9 Corvi, 9 Crv, BD−22 3401, CD−22 3401, −22 9505, CPD−22 5388, FK5 471, GC 17133, HD 109379, HIP 61359, HR 4786, SAO 180915, PPM 260512 | |
| Database references | |
| SIMBAD | data |
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