A Centauri
| |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 34m 45.66s[1] |
| Declination | −54° 15′ 50.7″[1] |
| Apparent magnitude (V) | +4.62 |
| Characteristics | |
| Spectral type | B9Ve |
| U−B color index | −0.21 |
| B−V color index | −0.08 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +3 km/s |
| Proper motion (μ) | RA: -56.17 ± 0.18[1] mas/yr Dec.: 16.19 ± 0.20[1] mas/yr |
| Parallax (π) | 7.65 ± 0.22[1] mas |
| Distance | 430 ± 10 ly (131 ± 4 pc) |
| Absolute magnitude (MV) | −1.13 |
| Details | |
| Mass | 3.58 ± 0.05[2] M☉ |
| Radius | 2.4-3.1[3] R☉ |
| Luminosity | 306[2] L☉ |
| Temperature | 10,600[2] K |
| Rotational velocity (v sin i) | 160[2] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
A Centauri (A Cen) is a star in the constellation Centaurus. It is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.62 and is approximately 430 light years from Earth.
External links
- Wikisky image of HD 100673 (A Centauri)
References
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752
. doi:10.1051/0004-6361:20078357. Vizier catalog entry - 1 2 3 4 Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, Bibcode:2012A&A...537A.120Z, arXiv:1201.2052 , doi:10.1051/0004-6361/201117691.
- ↑ Pasinetti Fracassini, L. E.; et al. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy & Astrophysics. 367 (2): 521–24. Bibcode:2001A&A...367..521P. arXiv:astro-ph/0012289 . doi:10.1051/0004-6361:20000451.
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