Beta Chamaeleontis
β Chamaeleontis
Observation data
Epoch J2000.0 Equinox J2000.0 (ICRS) |
| Constellation |
Chamaeleon |
| Right ascension |
12h 18m 20.8242s[1] |
| Declination |
−79° 18′ 44.063″[1] |
| Apparent magnitude (V) |
4.24 to 4.30[2] |
| Characteristics |
| Spectral type |
B5Vn[1] |
| U−B color index |
−0.51[3] |
| B−V color index |
−0.12[3] |
| R−I color index |
−0.10[3] |
| Astrometry |
|
| Radial velocity (Rv) |
23 ± 5[1] km/s |
| Proper motion (μ) |
RA: −38.07[1] mas/yr
Dec.: 12.00[1] mas/yr |
| Parallax (π) |
12.05 ± 0.51[1] mas |
| Distance |
270 ± 10 ly
(83 ± 4 pc) |
| Absolute magnitude (MV) |
−0.3[4] |
|
| Details |
|
| Radius |
3.1[5] R☉ |
| Rotational velocity (v sin i) |
255[3] km/s |
|
| Other designations |
β Cha, Beta Chamaeleontis, Beta Cha, CD−78 495, CPD−78 741, FK5 459, GC 16775, HD 106911, HIP 60000, HR 4674, PPM 371459, SAO 256924. [1] |
| Database references |
| SIMBAD |
data |
Beta Chamaeleontis (Beta Cha, β Chamaeleontis, β Cha) is a B-type main sequence star and is the third brightest star in the constellation of Chamaeleon.[1] It has an apparent visual magnitude which varies between 4.24 and 4.30.[2]
References
- ^ a b c d e f g h i NSV 5532 -- Variable Star, database entry, SIMBAD. Accessed on line September 5, 2008.
- ^ a b NSV 5532, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 5, 2008.
- ^ a b c d HR 4674, 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.
- ^ HD 106911, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line September 5, 2008.