A Centauri

From Wikipedia, the free encyclopedia
Jump to: navigation, search
This article is about "A Centauri". For "a Centauri", see V761 Centauri. For "α Centauri", see Alpha Centauri.
A Centauri
Diagram showing star positions and boundaries of the Centaurus constellation and its surroundings
Cercle rouge 100%.svg

Location of A Centauri (circled)
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
Spectral type B9Ve
U−B color index −0.21
B−V color index −0.08
Variable type none
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
Other designations
HR 4460, HD 100673, CP−53°4637, FK5 2926, HIP 56480, SAO 239189, GC 15877
Database references

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[edit]

  • Wikisky image of HD 100673 (A Centauri)


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