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Variable star in the constellation Crux From Wikipedia, the free encyclopedia
T Crucis is a star in the constellation Crux. A Cepheid variable, its apparent magnitude ranges from 6.32 to 6.83 over 6.73331 days.[3] It is a yellow-white supergiant that pulsates between spectral types F6Ib and G2Ib.[3] The radius is 55 times that of the Sun.
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Crux |
Right ascension | 12h 21m 21.12807s[1] |
Declination | −62° 16′ 53.8790″[1] |
Apparent magnitude (V) | 6.32 - 6.83[2] |
Characteristics | |
Evolutionary stage | F6-G2Ib[3] |
Variable type | δ Cep[2] |
Astrometry | |
Proper motion (μ) | RA: −10.915[1] mas/yr Dec.: −0.471[1] mas/yr |
Parallax (π) | 1.2106 ± 0.0142 mas[1] |
Distance | 2,690 ± 30 ly (826 ± 10 pc) |
Absolute magnitude (MV) | −3.49[4] |
Details | |
Mass | 7.2[1] M☉ |
Radius | 55[1] R☉ |
Luminosity | 2,601[1] L☉ |
Surface gravity (log g) | 1.52[1] cgs |
Temperature | 4,676[1] K |
Metallicity [Fe/H] | 0.09[4] dex |
Age | 57[4] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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