HD 129116

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This article is about b Centauri. For B Centauri, see B Centauri. For β Centauri, see Beta Centauri.
b Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 14h 41m 57.59s[1]
Declination −37° 47′ 37.6″[1]
Apparent magnitude (V) +4.01
Characteristics
Spectral type B3V
U−B color index −0.70
B−V color index −0.17
Variable type none
Astrometry
Radial velocity (Rv) +1 km/s
Proper motion (μ) RA: -29.92 ± 0.14[1] mas/yr
Dec.: -30.68 ± 0.13[1] mas/yr
Parallax (π) 9.62 ± 0.18[1] mas
Distance 339 ± 6 ly
(104 ± 2 pc)
Absolute magnitude (MV) −0.84
Details
Radius 2.93 ± 0.12[2] R
Surface gravity (log g) 4.23 ± 0.03[2] cgs
Temperature 18,445 ± 344[2] K
Other designations
HR 5471, HD 129116, CD−37°9618, HIP 71865, SAO 205839, GC 19779
Database references
SIMBAD data

HD 129116, also known by its Bayer designation b Centauri (b Cen), is a star in the constellation Centaurus.

b Centauri is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.01. It is approximately 339 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
  2. ^ a b c Fitzpatrick, E. L.; Massa, D. (March 2005), "Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry", The Astronomical Journal 129 (3): 1642–1662, arXiv:astro-ph/0412542, Bibcode:2005AJ....129.1642F, doi:10.1086/427855