For other star systems with this Bayer designation, see C Centauri.
C3 Centauri
Observation data Epoch J2000.0 Equinox J2000.0
Constellation
Centaurus
Right ascension
11h 37m 33.98833s[1]
Declination
−47° 44′ 50.2343″[1]
Apparent magnitude (V)
+5.46[2]
Characteristics
Spectral type
K2 III[3]
B−V color index
+1.23±0.01[2]
Astrometry
Radial velocity (Rv)
−0.18±0.40[1] km/s
Proper motion (μ)
RA: -68.956[1] mas/yr Dec.: 16.362[1] mas/yr
Parallax (π)
9.5467 ± 0.1227 mas[1]
Distance
342 ± 4 ly (105 ± 1 pc)
Details
Mass
2.16[4]M☉
Radius
15.85+0.30 −0.44[1]R☉
Luminosity
95.8±1.5[1]L☉
Surface gravity (log g)
2.12[5] cgs
Temperature
4,535+174 −43[1] K
Metallicity [Fe/H]
0.10[4] dex
Rotational velocity (v sin i)
>1.0[6] km/s
Other designations
C3 Cen, CD−47°6997, HD 101067, HIP 56700, HR 4476, SAO 222917[7]
Database references
SIMBAD
data
C3 Centauri is a suspected astrometric binary[8] star system in the southern constellation of Centaurus. It has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.46.[2] The distance to this object is approximately 342 light years based on parallax.[1] It is a member of the Hyades Stream of co-moving stars.[9]
The visible component of this system is an aging giant star with a stellar classification of K2 III,[3] which indicates it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence. At present it has nearly sixteen[1] times the girth of the Sun. It is radiating 96[1] times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,535 K.[1]
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C3Centauri is a suspected astrometric binary star system in the southern constellation of Centaurus. It has an orange hue and is dimly visible to the...
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"Multi-Orbit Mission by PSLV-C3 and Future Launch Opportunities". Iaf Abstracts: 936. Bibcode:2002iaf..confE.936R. "PSLV-C3". Archived from the original...
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