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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