4 Centauri

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4 Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 13h 53m 12.54s[1]
Declination −31° 55′ 39.4″[1]
Apparent magnitude (V) +4.75
Characteristics
Spectral type B4IV
U−B color index −0.54
B−V color index −0.14
Variable type none
Astrometry
Radial velocity (Rv) +5 km/s
Proper motion (μ) RA: -12.72 ± 0.68[1] mas/yr
Dec.: -9.48 ± 0.57[1] mas/yr
Parallax (π) 5.12 ± 0.70[1] mas
Distance approx. 640 ly
(approx. 200 pc)
Absolute magnitude (MV) −1.80
Other designations
h Centauri, HR 5221, HD 120955, CD−31°10729, HIP 67786, SAO 204944, GC 18755, CCDM J13532-3156
Database references
SIMBAD data

4 Centauri is a star in the constellation Centaurus. It is a blue-white B-type subgiant with an apparent magnitude of +4.75 and is approximately 640 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