Global InformationV763 Centauri information
 A light curve for V763 Centauri, plotted from Hipparcos data[1] | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 35m 13.28134s[2] |
| Declination | −47° 22′ 21.2888″[2] |
| Apparent magnitude (V) | +5.64[3] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M3/4III[5] |
| B−V color index | +1.682±0.019[3] |
| Variable type | Lb[6] |
| Astrometry | |
| Radial velocity (Rv) | +21.07±0.29[2] km/s |
| Proper motion (μ) | RA: -87.503[2] mas/yr Dec.: -6.988[2] mas/yr |
| Parallax (π) | 5.4236 ± 0.1476 mas[2] |
| Distance | 600 ± 20 ly (184 ± 5 pc) |
| Absolute magnitude (MV) | −1.05[3] |
| Details | |
| Radius | 64.7+5.9 −4.3[2] R☉ |
| Luminosity | 754±24[2] L☉ |
| Temperature | 3,761+130 −161[2] K |
| Other designations | |
C1 Cen, V763 Centauri, CD−46°7199, GC 15886, HD 100733, HIP 56518, HR 4463, SAO 222887, CCDM J11352-4722[7] | |
| Database references | |
| SIMBAD | data |
C1 Centauri is a single[8] star in the southern constellation of Centaurus. It has the variable star designation V763 Centauri, while C1 Centauri is the Bayer designation. The star has a red hue and is dimly visibly to the naked eye with an apparent visual magnitude that fluctuates around +5.64.[3] It is located at a distance of approximately 600 light years based on parallax, and has an absolute magnitude of −1.05.[3] It is drifting further away with a radial velocity of +21 km/s.[2] At one time it was a candidate member of the Zeta Herculis Moving Group but has since been excluded.[9]
This object is an aging red giant star on the asymptotic giant branch[4] with a stellar classification of M3/4III.[5] Samus et al. (2017) classify this as a slow irregular variable of sub-type Lb and its brightness varies from magnitude +5.52 down to +5.82.[6] It was previously classified as a semiregular variable of sub-type SRb.[10] With the supply of hydrogen and helium at its core exhausted, the star has expanded until now it has 65 times the radius of the Sun. It is radiating 754 times the luminosity of the Sun from its photosphere at an effective temperature of 3,761 K.[2]
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