2 Centauri

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For G Centauri, see HD 108257.
2 Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 13h 49m 26.72s[1]
Declination −34° 27′ 02.8″[1]
Apparent magnitude (V) +4.19
Characteristics
Spectral type M4.5III
U−B color index +1.45
B−V color index +1.50
Variable type semiregular
Astrometry
Radial velocity (Rv) +41 km/s
Proper motion (μ) RA: -41.68 ± 0.23[1] mas/yr
Dec.: -59.77 ± 0.18[1] mas/yr
Parallax (π) 17.82 ± 0.21[1] mas
Distance 183 ± 2 ly
(56.1 ± 0.7 pc)
Absolute magnitude (MV) +0.51
Other designations
g Centauri, V806 Centauri, HR 5192, HD 120323, CD−33°9358, HIP 67457, SAO 204875, GC 18666
Database references
SIMBAD data

2 Centauri is a star in the constellation Centaurus.

2 Centauri is a M-type red giant with a mean apparent magnitude of +4.19. It is approximately 183 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +4.16 to +4.26 with a period of 12. days.

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