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β Corvi
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Corvus
Right ascension 12h 34m 23.2346s[1]
Declination −23° 23′ 48.333″[1]
Apparent magnitude (V) 2.60 to 2.66[2]
Spectral type G5II[1]
U-B color index +0.60[3]
B-V color index +0.89[3]
R-I color index +0.44[3]
Radial velocity (Rv) −7.6 ± 0.9[1] km/s
Proper motion (μ) RA: 0.86[1] mas/yr
Dec.: −56.00[1] mas/yr
Parallax (π) 23.34 ± 0.80[1] mas
Distance 140 ± 5 ly
(43 ± 1 pc)
Absolute magnitude (MV) −0.5[4]
Mass 3.3[5] M
Radius 16[5] R
Luminosity 160[5] L
Temperature 5,100[5] K
Rotation ≤180 days[5]
Other designations
Kraz, β Crv, Beta Corvi, Beta Crv, 9 Corvi, 9 Crv, BD−22 3401, CD−22 3401, CD−22 9505, CPD−22 5388, FK5 471, GC 17133, HD 109379, HIP 61359, HR 4786, PPM 260512, SAO 180915.[1][3]
Database references

Beta Corvi (Beta Crv / β Corvi / β Crv) is the second brightest star in the constellation of Corvus. It also has the name Kraz.[5] It is approximately 140 light-years away and is a G-type bright giant star whose apparent visual magnitude which varies between 2.60 and 2.66.[1][2]

See also


  1. ^ a b c d e f g h i SV* ZI 946 -- Variable Star, database entry, SIMBAD. Accessed on line September 9, 2008.
  2. ^ a b NSV 5729, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 9, 2008.
  3. ^ a b c d HR 4786, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line September 9, 2008.
  4. ^ From apparent magnitude and parallax.
  5. ^ a b c d e f Kraz, Stars, Jim Kaler. Accessed on line September 9, 2008.

External links



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