Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Centaurus |
Right ascension | 14h 06m 02.77s [1] |
Declination | −41° 10′ 46.7″ [1] |
Apparent magnitude (V) | +4.353 ± 0.007 [2] |
Characteristics | |
Spectral type | B2 V [3] |
U−B color index | −0.774 ± 0.013 [2] |
B−V color index | −0.195 ± 0.006 [2] |
Variable type | β Cep [4] |
Astrometry | |
Radial velocity (Rv) | +12 km/s |
Proper motion (μ) |
RA: –22.90 ± 0.17
[1]
mas/
yr Dec.: –21.69 ± 0.17 [1] mas/ yr |
Parallax (π) | 6.39 ± 0.21 mas [1] |
Distance | 510 ± 20
ly (156 ± 5 pc) |
Absolute magnitude (MV) | −1.3 [5] |
Details | |
Mass | 8.2 ± 0.2 [3] M☉ |
Luminosity | 1,600 [5] L☉ |
Surface gravity (log g) | 4.22 ± 0.05 [2] cgs |
Temperature | 20,800 ± 300 [2] K |
Rotational velocity (v sin i) | 18 ± 1 [2] km/s |
Age | 9.1 ± 3.8 [3] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Chi Centauri (χ Cen, χ Centauri) is a star in the constellation Centaurus.
χ Centauri is a blue-white B-type main sequence dwarf with a mean apparent magnitude of +4.36. It is approximately 510 light years from Earth. It is classified as a Beta Cephei type variable star and its brightness varies by 0.02 magnitudes with a period of 50.40 minutes.
This star is a proper motion member of the Upper Centaurus–Lupus sub-group in the Scorpius–Centaurus OB association, the nearest such co-moving association of massive stars to the Sun. [5]
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Centaurus |
Right ascension | 14h 06m 02.77s [1] |
Declination | −41° 10′ 46.7″ [1] |
Apparent magnitude (V) | +4.353 ± 0.007 [2] |
Characteristics | |
Spectral type | B2 V [3] |
U−B color index | −0.774 ± 0.013 [2] |
B−V color index | −0.195 ± 0.006 [2] |
Variable type | β Cep [4] |
Astrometry | |
Radial velocity (Rv) | +12 km/s |
Proper motion (μ) |
RA: –22.90 ± 0.17
[1]
mas/
yr Dec.: –21.69 ± 0.17 [1] mas/ yr |
Parallax (π) | 6.39 ± 0.21 mas [1] |
Distance | 510 ± 20
ly (156 ± 5 pc) |
Absolute magnitude (MV) | −1.3 [5] |
Details | |
Mass | 8.2 ± 0.2 [3] M☉ |
Luminosity | 1,600 [5] L☉ |
Surface gravity (log g) | 4.22 ± 0.05 [2] cgs |
Temperature | 20,800 ± 300 [2] K |
Rotational velocity (v sin i) | 18 ± 1 [2] km/s |
Age | 9.1 ± 3.8 [3] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Chi Centauri (χ Cen, χ Centauri) is a star in the constellation Centaurus.
χ Centauri is a blue-white B-type main sequence dwarf with a mean apparent magnitude of +4.36. It is approximately 510 light years from Earth. It is classified as a Beta Cephei type variable star and its brightness varies by 0.02 magnitudes with a period of 50.40 minutes.
This star is a proper motion member of the Upper Centaurus–Lupus sub-group in the Scorpius–Centaurus OB association, the nearest such co-moving association of massive stars to the Sun. [5]