ß Columbae
Observation data
Epoch J2000.0 Equinox J2000.0 (ICRS) |
| Constellation |
Columba |
| Right ascension |
05h 50m 57.5929s[1] |
| Declination |
-35° 46' 05.911?[1] |
| Apparent magnitude (V) |
3.12[1] |
| Characteristics |
| Spectral type |
K1IIICN+1[1] |
| U-B color index |
+1.21[2] |
| B-V color index |
+1.16[2] |
| R-I color index |
+0.58[2] |
| Astrometry |
| Radial velocity (Rv) |
88.9 ± 0.9[1] km/s |
| Proper motion (µ) |
RA: 55.74[1] mas/yr
Dec.: 404.66[1] mas/yr |
| Parallax (p) |
37.94 ± 0.57[1] mas |
| Distance |
86 ± 1 ly
(26.4 ± 0.4 pc) |
| Absolute magnitude (MV) |
1.02[3] |
| Details |
|
| Mass |
1.7[4] M? |
| Radius |
12[4] R? |
| Luminosity (bolometric) |
50[4] L? |
| Temperature |
4535[4] K |
| Age |
2 × 109 [4] years |
|
| Other designations |
ß 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. [1] |
| Database references |
| SIMBAD |
data |
Beta Columbae (Beta Col / ß Columbae / ß Col) is a K-type giant star and is the second brightest star in the constellation of Columba.[4] It has the traditional name Wazn or Wezn, from the Arabic word ??? (English: weight.)[2][4] It has an apparent visual magnitude of approximately 3.12, spectral class K1IIICN+1, and is approximately 86 light-years (26 pc) from Earth.[1] ß Columbae is moving at an unusually large speed of 100 km/sec, relative to the Sun.[4]
References
- ^ a b c d e f g h i j NLTT 15724 -- High proper-motion Star, database entry, SIMBAD. Accessed on line September 5, 2008.
- ^ a b c d HR 2040, 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 5, 2008.
- ^ From apparent magnitude and parallax.
- ^ a b c d e f g h Wazn, Jim Kaler, Stars. Accessed on line September 5, 2008.
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