Beta Columbae

Not to be confused with Wezen, a star in Canis Major.
β Columbae
Location of β Columbae (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Columba
Right ascension 05h 50m 57.5929s[1]
Declination −35° 46′ 05.9152″[1]
Apparent magnitude (V) 3.105[2]
Characteristics
Spectral type K1 IIICN+1[3]
U−B color index +1.189[2]
B−V color index +1.162[2]
R−I color index +0.58[4]
Astrometry
Radial velocity (Rv)+88.9[5] km/s
Proper motion (μ) RA: +54.77[1] mas/yr
Dec.: 404.20[1] mas/yr
Parallax (π)37.41 ± 0.12 mas[1]
Distance87.2 ± 0.3 ly
(26.73 ± 0.09 pc)
Absolute magnitude (MV)+1.01[6]
Details
Mass1.10 ± 0.20[7] M☉
Radius11.5[8] R☉
Luminosity (bolometric)56[9] L☉
Surface gravity (log g)2.62[3] cgs
Temperature4,545[3] K
Metallicity [Fe/H]0.11[3] dex
Age2[10] Gyr
Other designations
β Col, Beta Columbae, Beta Col, CD−35 2546, CPD−35 752, FK5 223, GC 7364, HD 39425, HIP 27628, HR 2040, LTT 2392, NLTT 15724, PPM 281952, SAO 196240.[11]
Database references
SIMBADdata

Beta Columbae (β Columbae, abbreviated Beta Col, β Col), officially named Wazn /ˈwɒzən/,[12] is the second-brightest star in the southern constellation of Columba.[10] It has an apparent visual magnitude of 3.1,[2] which is bright enough to be viewed with the naked eye even from an urban location. Parallax measurements place it at a distance of about 87.2 light-years (26.7 parsecs) from the Sun.[1]

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  12. ^ "IAU Catalog of Star Names". Retrieved 28 July 2016.