Sigma Centauri

From Wikipedia, the free encyclopedia
Jump to: navigation, search
σ Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 12h 28m 02.38s[1]
Declination −50° 13′ 50.3″[1]
Apparent magnitude (V) +3.91
Characteristics
Spectral type B2V
U−B color index −0.78
B−V color index −0.19
Variable type none
Astrometry
Radial velocity (Rv) +8 km/s
Proper motion (μ) RA: -32.36 ± 0.15[1] mas/yr
Dec.: -12.51 ± 0.13[1] mas/yr
Parallax (π) 7.92 ± 0.18[1] mas
Distance 412 ± 9 ly
(126 ± 3 pc)
Absolute magnitude (MV) −1.75
Other designations
HR 4743, HD 108483, CD−49°7115, FK5 464, HIP 60823, SAO 223454, GC 16990
Database references
SIMBAD data

Sigma Centauri (σ Cen, σ Centauri) is a star in the constellation Centaurus. σ Centauri is a blue-white B-type main sequence dwarf with an apparent magnitude of +3.91. It is approximately 412 light years from Earth.

References[edit]

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