1 Cassiopeiae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 06m 36.818s[1] |
| Declination | +59° 25′ 11.14″[1] |
| 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: 6.94 ± 0.14[1] mas/yr Dec.: −1.95 ± 0.14[1] mas/yr |
| Parallax (π) | 2.89 ± 0.13[1] mas |
| Distance | 1,130 ± 50 ly (350 ± 20 pc) |
| Absolute magnitude (MV) | −2.8 |
| Details | |
| Mass | 13.1[2] M☉ |
| Radius | 10.2[3] R☉ |
| Luminosity | 18,200[2] L☉ |
| Surface gravity (log g) | 3.98[2] cgs |
| Temperature | 27,200[2] 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 1130 light years from Earth.[1]
References
- 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- 1 2 3 4 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, arXiv:astro-ph/0412542, 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, doi:10.1093/mnras/189.3.601
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