Q Centauri

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Q Centauri A/B
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)
Spectral type B8Vn/A0V
U−B color index −0.23
B−V color index −0.05
Variable type none
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[1] mas
Distance 270 ± 20 ly
(83 ± 5 pc)
Absolute magnitude (MV) +0.39 (+1.1/+2.5)
Other designations
HR 5141, HD 118991, CP−53°5725, HIP 66821, SAO 241076, GC 18495, CCDM J13417-5434
Database references

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.

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.


  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry