HD 129116

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
Declination	−37° 47′ 37.6″
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 mas/yr Dec.: -30.68 ± 0.13 mas/yr
Parallax (π)	9.62 ± 0.18 mas
Distance	339 ± 6 ly (104 ± 2 pc)
Absolute magnitude (MV)	−0.84
Details
Radius	2.93 ± 0.12 R☉
Surface gravity (log g)	4.23 ± 0.03 cgs
Temperature	18,445 ± 344 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.