X2 Centauri
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 25m 21.73454s |
| Declination | −35° 11′ 11.0985″ |
| Apparent magnitude (V) | 5.71 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | B9 IV/V |
| B−V color index | −0.06 |
| Astrometry | |
| Radial velocity (Rv) | −11.3 km/s |
| Proper motion (μ) | RA: −41,277 mas/yr Dec.: −6.379 mas/yr |
| Parallax (π) | 7.1919±0.0668 mas |
| Distance | 454 ± 4 ly (139 ± 1 pc) |
| Absolute magnitude (MV) | 0.26 |
| Details | |
| Mass | 3.1 M☉ |
| Radius | 2.8 R☉ |
| Luminosity | 141 L☉ |
| Surface gravity (log g) | 4.02 cgs |
| Temperature | 111,794 K |
| Rotation | 7.26 days |
| Age | 258 Myr |
| Other designations | |
| x2 Cen, CD−34°8146, HD 108114, HIP 60610, SAO 203450, HR 4724, GC 16938 | |
| Database references | |
| SIMBAD | data |
x2 Centauri is a star located in the constellation Centaurus. It is also known by its designations HD 108114 and HR 4724. The apparent magnitude of the star is about 5.7, meaning it is only visible to the naked eye under excellent viewing conditions. Its distance is about 454 light-years (139 parsecs), based on its parallax measured by the Hipparcos astrometry satellite.
x2 Centauri's spectral type is B9IV/V, meaning it is a late B-type main sequence star or subgiant. These types of stars are a few times more massive than the Sun, and have effective temperatures of about 10,000 to 30,000 K. x2 Centauri has a temperature of about 11,500 K. The star x1 Centauri, which lies about 0.4′ away from x2 Centauri, may or may not form a physical binary star system with x2 Centauri, as the two have similar proper motions and distances.