C1 Centauri

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For other star systems with this Bayer designation, see C Centauri.
C1 Centauri
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 11h 35m 13.282s[1]
Declination −47° 22′ 21.29″[1]
Apparent magnitude (V) +5.64
Spectral type M3III
U−B color index +1.93
B−V color index +1.66
Variable type semiregular
Radial velocity (Rv) +18 km/s
Proper motion (μ) RA: -87.81 ± 0.30[1] mas/yr
Dec.: -7.46 ± 0.37[1] mas/yr
Parallax (π) 4.52 ± 0.49[1] mas
Distance approx. 720 ly
(approx. 220 pc)
Absolute magnitude (MV) −0.86
Other designations
V763 Centauri, HR 4463, HD 100733, CD−46°7199, HIP 56518, SAO 222887, GC 15886, CCDM J11352-4722
Database references

C1 Centauri (C1 Cen) is a star in the constellation Centaurus. It is approximately 720 light years from Earth.

C1 Centauri A is a M-type red giant with a mean apparent magnitude of +5.64. It is classified as a semiregular variable star and its brightness varies from magnitude +5.55 to +5.80 with a period of 60 days.


  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