6 Cassiopeiae
Star in the constellation Cassiopeia / From Wikipedia, the free encyclopedia
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6 Cassiopeiae (6 Cas) is a white hypergiant in the constellation Cassiopeia, and a small-amplitude variable star.
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Cassiopeia |
Right ascension | 23h 48m 50.171s[1] |
Declination | +62° 12′ 52.26″[1] |
Apparent magnitude (V) | +5.43[2] (5.34 - 5.45[3]) |
Characteristics | |
Spectral type | A2.5 Ia+[4] |
U−B color index | −0.02[2] |
B−V color index | +0.67[2] |
Variable type | α Cyg[3] |
Astrometry | |
Proper motion (μ) | RA: −3.57±0.35[1] mas/yr Dec.: −1.57±0.33[1] mas/yr |
Parallax (π) | 0.53 ± 0.37 mas[1] |
Distance | 2,510[5] pc |
Absolute magnitude (MV) | −8.30[6] |
Details | |
Mass | 22.0[6] M☉ |
Radius | 193[6] R☉ |
Luminosity | 200,000[7] L☉ |
Surface gravity (log g) | 1.59[8] cgs |
Temperature | 10,023±227[8] K |
Metallicity [Fe/H] | 0.29[8] dex |
Rotational velocity (v sin i) | 50[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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