C3 Centauri
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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | +5.46[2] |
| Characteristics | |
| Spectral type | K2 III[3] |
| B−V Template:Engvar | Template:Val[2] |
| Astrometry | |
| Radial velocity (Rv) | Template:Val[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 | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Details | |
| Mass | 2.16[4] Template:Solar mass |
| Radius | Template:Val[1] Template:Solar radius |
| Luminosity | Template:Val[1] Template:Solar luminosity |
| Surface gravity (log g) | 2.12[5] cgs |
| Temperature | Template:Val[1] K |
| Metallicity [Fe/H] | 0.10[4] dex |
| Rotational velocity (v sin i) | >1.0[6] km/s |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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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]
References
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