| Observation data EpochJ2000 EquinoxJ2000 | |
|---|---|
| Constellation | Centaurus[1] |
| Right ascension | 12h 23m 35.420s[2] |
| Declination | −35° 24′ 45.64″[2] |
| Apparent magnitude (V) | 5.32[1] |
| Characteristics | |
| Spectral type | B8/9V[3] |
| B−Vcolor index | −0.08[4] |
| Astrometry | |
| Radial velocity (Rv) | −10.00[5] km/s |
| Proper motion (μ) | RA: −42.132mas/yr[2] Dec.: −6.896mas/yr[2] |
| Parallax (π) | 7.3671±0.0953 mas[2] |
| Distance | 443 ± 6 ly (136 ± 2 pc) |
| Absolute magnitude (MV) | −0.2[6] |
| Details | |
| Mass | 3[7] M☉ |
| Radius | 3.6[8] R☉ |
| Luminosity | 265[9] L☉ |
| Temperature | 11,300[7] K |
| Age | 0.151[7] Gyr |
| Other designations | |
| x1 Cen,CD−34°8117,GC 16892,HD 107832,HIP 60449,HR 4712,SAO 203420,G 113 G. Cen[9][10] | |
| Database references | |
| SIMBAD | data |
x1 Centauri is astar located in theconstellationCentaurus. Its name is aBayer designation; it is also known by its designationsHD 107832 andHR 4712. Theapparent magnitude of thestar is about 5.32,[1] meaning it is only visible to thenaked eye underexcellent viewing conditions. Its distance is about 443light-years (136 pc) from Earth based onparallax measurements.[2]
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[7] and has a temperature of about 11,300 K.[7] 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.[10][11]
