Tau Centauri

τ Centauri

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Centaurus
Right ascension	12^h 37^m 42.16^s[1]
Declination	−48° 32′ 28.7″[1]
Apparent magnitude (V)	+3.85
Characteristics
Spectral type	A2V
U−B color index	+0.03
B−V color index	+0.05
Variable type	none
Astrometry
Radial velocity (Rv)	+5 km/s
Proper motion (μ)	RA: -186.26 ± 0.39[1] mas/yr Dec.: -6.01 ± 0.33[1] mas/yr
Parallax (π)	24.85 ± 0.53[1] mas
Distance	131 ± 3 ly (40.2 ± 0.9 pc)
Absolute magnitude (MV)	+0.82
Other designations
HR 4802, HD 109787, CD−47°7745, HIP 61622, SAO 223560, GC 17194
Database references
SIMBAD	data

Tau Centauri (τ Cen, τ Centauri) is a star in the constellation Centaurus. It is a A-type main-sequence star with an apparent magnitude of +3.85 and is approximately 131 light years from Earth.

References

1. 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