4 Centauri

4 Centauri

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Centaurus
Right ascension	13^h 53^m 12.54^s[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

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