Tau Centauri

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τ Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 12h 37m 42.16s[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 white A-type main sequence dwarf with an apparent magnitude of +3.85 and is approximately 131 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