1 Cassiopeiae
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 06m 36.9s |
| Declination | +59° 25′ 11″ |
| Apparent magnitude (V) | +4.84 |
| Characteristics | |
| Spectral type | B0.5 IV |
| U−B color index | −0.87 |
| B−V color index | −0.03 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | −9 km/s |
| Proper motion (μ) | RA: 6.77 mas/yr Dec.: −1.97 mas/yr |
| Parallax (π) | 2.95 ± 0.53 mas |
| Distance | approx. 1,100 ly (approx. 340 pc) |
| Absolute magnitude (MV) | −2.8 |
| Details | |
| Mass | 13.1[1] M☉ |
| Radius | 10.2[2] R☉ |
| Luminosity | 18,200[1] L☉ |
| Surface gravity (log g) | 3.98[1] |
| Temperature | 27,200[1] K |
| Other designations | |
1 Cassiopeiae is a star in the constellation Cassiopeia. It is a blue-white B-type subgiant with an apparent magnitude of +4.84 and is approximately 1110 light years from Earth.
[edit] References
- ^ a b c d Fitzpatrick, E. L.; Massa, D. (March 2005), "Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry", The Astronomical Journal 129 (3): 1642–1662, Bibcode 2005AJ....129.1642F, doi:10.1086/427855
- ^ Underhill, A. B. et al. (November 1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", Monthly Notices of the Royal Astronomical Society 189: 601–605, Bibcode 1979MNRAS.189..601U
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