Back Delta Centauri AST Delta Centauri BAR Delta Centauri BS Delta del Centaure Catalan Delta Centauri German Delta Centauri Spanish دلتا قنطورس Persian Delta Centauri Finnish Delta Centauri French דלתא בקנטאור HE

Delta Centauri

δ Centauri
Location of δ Centauri (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 12h 08m 21.49764s[1]
Declination −50° 43′ 20.7386″[1]
Apparent magnitude (V) +2.57[2] (2.51 - 2.65[3])
Characteristics
Spectral type B2Vne[4] or B2 IVne[5]
U−B color index −0.92[2]
B−V color index −0.13[2]
Variable type γ Cas[3]
Astrometry
Radial velocity (Rv)+11[6] km/s
Proper motion (μ) RA: −49.94[1] mas/yr
Dec.: −7.19[1] mas/yr
Parallax (π)7.86 ± 0.47 mas[1]
Distance410 ± 20 ly
(127 ± 8 pc)
Absolute magnitude (MV)−2.94[7]
Details
Mass8.7±0.3[4] M☉
Radius8.18±0.16[8] R☉
Luminosity5,129[4] L☉
Surface gravity (log g)3.43±0.03[8] cgs
Temperature22,150±222[8] K
Rotational velocity (v sin i)263±14[9] km/s
Age21.5±1.5[10] Myr
Other designations
δ Cen, CD−50°6697, CPD−50°4862, FK5 452, HD 105435, HIP 59196, HR 4621, SAO 239689
Database references
SIMBADdata

Delta Centauri, Latinized from δ Centauri, is a star in the southern constellation of Centaurus. The apparent visual magnitude of this star is +2.57,[2] making it readily visible to the naked eye. Based upon parallax measurements, it is located at a distance of about 410 light-years (130 parsecs) from the Earth.[1] The star is drifting further away with a radial velocity of +11 km/s.[6]

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