J Centauri

For j Centauri, see HD 102776.

J Centauri (J Cen) is a star in the constellation Centaurus. Its mean apparent magnitude is 4.5, making it easily visible to the naked eye. It is approximately 350 light years from Earth.

J Centauri

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Centaurus[1]
Right ascension	13h 22m 37.9331s[2]
Declination	−60° 59′ 18.170″[2]
Apparent magnitude (V)	+4.505[3]
Characteristics
Evolutionary stage	main sequence[2]
Spectral type	B3V[4]
U−B color index	−0.62[5]
B−V color index	−0.13[5]
Astrometry
Radial velocity (Rv)	+6.0[6] km/s
Proper motion (μ)	RA: −29.518[2] mas/yr Dec.: −21.698[2] mas/yr
Parallax (π)	8.8824±0.1293 mas[2]
Distance	367 ± 5 ly (113 ± 2 pc)
Absolute magnitude (MV)	−0.66[1]
Details
Mass	4.1[2][7] M☉
Radius	3.6[2] R☉
Luminosity	265[7] L☉
Surface gravity (log g)	3.97[2] cgs
Temperature	24,757[7] K
Rotational velocity (v sin i)	223[8] km/s
Age	15.4[9] Myr
Other designations
HR 5035, HD 116087, CD−60°4640, FK5 1347, HIP 65271, SAO 252284, GC 18087, CCDM J13226-6059[3]
Database references
SIMBAD	data

J Centauri is a spectral class B3V main sequence star with a luminosity 265 times that of the Sun. The temperature of the star's photosphere is nearly 25,000 K. The rotation velocity at the equator is at least 223 km/s.^[8] It is believed to be a binary star system.^[10]

This star may be a member of the Scorpio-Centaurus OB association (Sco OB2). This is one of the nearest regions of recent star formation.^[11]