| Observation data EpochJ2000 EquinoxJ2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 23m 35.42002s[1] |
| Declination | −35° 24′ 45.6383″[1] |
| Apparent magnitude (V) | 5.312[2] |
| Characteristics | |
| Spectral type | B8/9V[2] |
| B−Vcolor index | -0.08[3] |
| Astrometry | |
| Radial velocity (Rv) | -10.00[4] km/s |
| Proper motion (μ) | RA: -41.17[1]mas/yr Dec.: -7.44[1]mas/yr |
| Parallax (π) | 7.34±0.26 mas[1] |
| Distance | 440 ± 20 ly (136 ± 5 pc) |
| Absolute magnitude (MV) | -0.2[5] |
| Details | |
| Mass | 3[6] M☉ |
| Radius | 3.6[7] R☉ |
| Luminosity | 265[8] L☉ |
| Temperature | 11300[6] K |
| Age | 0.151[6] Gyr |
| Other designations | |
| x1 Cen,113 G. Cen,[8]CD-34° 8117,HD 107832,HIP 60449,SAO 203420,HR 4712,GC 16892[2] | |
| Database references | |
| SIMBAD | data |
x1 Centauri is astar located in theconstellationCentaurus. It is also known by its designationsHD 107832 andHR 4712. Theapparent magnitude of thestar is about 5.3, meaning it is only visible to the naked eye underexcellent viewing conditions. Its distance is about 440light-years (140parsecs), based on itsparallax measured by theHipparcosastrometry satellite.[1]
x1 Centauri'sspectral type is B8/9V, meaning it is a lateB-type main sequence star. These types of stars are a few times more massive than theSun, and haveeffective temperatures of about 10,000 to 30,000K. x1 Centauri is just over 3 times more massive than the Sun[6] and has a temperature of about 11,300 K.[6] The starx2 Centauri, which lies about 0.4′ away from x1 Centauri, may or may not form a physicalbinary star system with x1 Centauri, as the two have similarproper motions and distances.[2][9]
