Q Centauri (Q Cen) is a binary star in the constellation Centaurus. It has a combined apparent magnitude of 4.99 and is approximately 270 light years from Earth.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 41m 44.772s[1] |
| Declination | −54° 33′ 33.93″[1] |
| Apparent magnitude (V) | 4.99 ( 5.7/ 7.1) |
| Characteristics | |
| Spectral type | B8Vn/A0V |
| U−B color index | −0.23 |
| B−V color index | −0.05 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | 10 km/s |
| Proper motion (μ) | RA: -42.33 ± 0.60[1] mas/yr Dec.: -24.26 ± 0.53[1] mas/yr |
| Parallax (π) | 12.02 ± 0.69 mas[1] |
| Distance | 270 ± 20 ly (83 ± 5 pc) |
| Absolute magnitude (MV) | 0.39 ( 1.1/ 2.5) |
| Other designations | |
| Database references | |
| SIMBAD | data |
The primary component, Q Centauri A, is a blue-white B-type main sequence dwarf with an apparent magnitude of 5.7. Its companion, Q Centauri B, is a white A-type main sequence dwarf with an apparent magnitude of 7.1. The two stars are separated by 5.5 arcseconds on the sky.
References
edit- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
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