J Centauri
J Centauri (J Cen) is a star in the constellation Centaurus. It is approximately 350 light years from Earth.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 22m 37.9371s |
| Declination | –60° 59′ 18.215″ |
| Apparent magnitude (V) | +4.505 |
| Characteristics | |
| Spectral type | B3V |
| U−B color index | –0.62 |
| B−V color index | –0.13 |
| Variable type | β Cep |
| Astrometry | |
| Radial velocity (Rv) | +6.0 km/s |
| Proper motion (μ) | RA: −35.50 mas/yr Dec.: −15.19 mas/yr |
| Parallax (π) | 9.20 ± 0.58 mas |
| Distance | 350 ± 20 ly (109 ± 7 pc) |
| Details | |
| Luminosity | 500 L☉ |
| Surface gravity (log g) | 4.22 cgs |
| Temperature | 23,970 ± 3,080 K |
| Rotational velocity (v sin i) | 223 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
J Centauri is a spectral class B3V main sequence star with a mean apparent magnitude of 4.5 and a luminosity 500 times that of the Sun. The temperature of the star's photosphere is nearly 24,000 K. The rotation velocity at the equator is at least 223 km/s. It is believed to be a binary star system.
This star may be a member of the Scorpio-Centaurus OB association (Sco OB2). This is one of the nearest regions of recent star formation.
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