Beta Columbae
Beta Columbae (β Columbae, abbreviated Beta Col, β Col), officially named Wazn /ˈwɒzən/, is the second-brightest star in the southern constellation of Columba. It has an apparent visual magnitude of 3.1, 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.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Columba |
| Right ascension | 05h 50m 57.5929s |
| Declination | −35° 46′ 05.9152″ |
| Apparent magnitude (V) | 3.105 |
| Characteristics | |
| Spectral type | K1 IIICN+1 |
| U−B color index | +1.189 |
| B−V color index | +1.162 |
| R−I color index | +0.58 |
| Astrometry | |
| Radial velocity (Rv) | +88.9 km/s |
| Proper motion (μ) | RA: +54.77 mas/yr Dec.: 404.20 mas/yr |
| Parallax (π) | 37.41 ± 0.12 mas |
| Distance | 87.2 ± 0.3 ly (26.73 ± 0.09 pc) |
| Absolute magnitude (MV) | +1.01 |
| Details | |
| Mass | 1.10 ± 0.20 M☉ |
| Radius | 11.5 R☉ |
| Luminosity (bolometric) | 56 L☉ |
| Surface gravity (log g) | 2.62 cgs |
| Temperature | 4,545 K |
| Metallicity [Fe/H] | 0.11 dex |
| Age | 2 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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