Kappa Cassiopeiae
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Cassiopeia |
| Right ascension | 00h 32m 59.9917s |
| Declination | +62° 55′ 54.418″ |
| Apparent magnitude (V) | 4.189 |
| Characteristics | |
| Spectral type | B1Iae |
| Apparent magnitude (U) | 3.50 |
| Apparent magnitude (B) | 4.276 |
| Apparent magnitude (J) | 4.141 |
| Apparent magnitude (H) | 4.148 |
| Apparent magnitude (K) | 4.013 |
| U−B color index | -0.776 |
| B−V color index | +0.0869 |
| J−H color index | -0.0069 |
| J−K color index | +0.128 |
| Variable type | α Cyg |
| Astrometry | |
| Radial velocity (Rv) | -2.3 km/s |
| Proper motion (μ) | RA: 3.99 mas/yr Dec.: -2.10 mas/yr |
| Parallax (π) | 0.79 ± 0.52 mas |
| Distance | 4126.57 ly (1265.82 pc) |
| Absolute magnitude (MV) | -6.32 |
| Details | |
| Radius | 41.4[1] R☉ |
| Luminosity | 330,000[1] L☉ |
| Surface gravity (log g) | 2.6[1] |
| Temperature | 21,500[1] K |
| Rotational velocity (v sin i) | 91[1] km/s |
| Other designations | |
Kappa Cassiopeiae (κ Cas, κ Cassiopeiae) is a star in the constellation Cassiopeia.
κ Cassiopeiae is a blue-white B-type supergiant with a mean apparent magnitude of +4.17. It is approximately 4100 light years from Earth. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude +4.22 to +4.30.
[edit] References
- ^ a b c d e Crowther, P. A.; Lennon, D. J.; Walborn, N. R. (January 2006), "Physical parameters and wind properties of galactic early B supergiants", Astronomy and Astrophysics 446 (1): 279–293, Bibcode 2006A&A...446..279C, doi:10.1051/0004-6361:20053685
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