Xi2 Centauri

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For other star systems with this Bayer designation, see Xi Centauri.
ξ2 Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 13h 06m 54.64s[1]
Declination −49° 54′ 22.5″[1]
Apparent magnitude (V) +4.27
Spectral type B1.5V
U−B color index −0.79
B−V color index −0.19
Variable type none
Radial velocity (Rv) +14 km/s
Proper motion (μ) RA: -26.15 ± 0.23[1] mas/yr
Dec.: -12.03 ± 0.15[1] mas/yr
Parallax (π) 6.98 ± 0.24[1] mas
Distance 470 ± 20 ly
(143 ± 5 pc)
Absolute magnitude (MV) −1.23
Other designations
HR 4942, HD 113791, CD−49°7644, FK5 489, HIP 64004, SAO 223909, GC 17773, CCDM J13069-4954
Database references

Xi2 Centauri2 Cen, ξ2 Centauri) is a double star in the constellation Centaurus. It is approximately 470 light years from Earth.

The primary component, ξ2 Centauri A, is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.27. Its companion, ξ2 Centauri B, is a tenth magnitude yellow-white F-type dwarf. The two stars share a common proper motion, indicating they may be gravitationally bound.


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