R Cassiopeiae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 58m 24.873s[1] |
| Declination | +51° 23′ 19.70″[1] |
| Apparent magnitude (V) | 4.70 - 13.50[2] |
| Characteristics | |
| Spectral type | M6e - M10e[2] |
| U−B color index | +0.08 |
| B−V color index | +1.83 |
| Variable type | Mira[2] |
| Astrometry | |
| Radial velocity (Rv) | +021 km/s |
| Proper motion (μ) | RA: 85.52 ± 0.75[1] mas/yr Dec.: 17.49 ± 0.72[1] mas/yr |
| Parallax (π) | 7.95 ± 1.02[1] mas |
| Distance | approx. 410 ly (approx. 130 pc) |
| Details | |
| Radius | 236 - 310[3] R☉ |
| Luminosity | 8,330 L☉ |
| Temperature | 3,130[3] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Cassiopeiae (R Cas) is a star in the constellation Cassiopeia.
R Cassiopeiae is a M-type red giant. It is classified as a Mira-type variable star and its brightness varies between magnitudes +4.7 to +13.5 with a period of 430.5 days. It is approximately 410 light years from Earth.[1]
See also
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 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- 1 2 de Beck, E.; Decin, L.; de Koter, A.; Justtanont, K.; Verhoelst, T.; Kemper, F.; Menten, K. M. (2010). "Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles. II. CO line survey of evolved stars: derivation of mass-loss rate formulae". 523: A18. arXiv:1008.1083. Bibcode:2010A&A...523A..18D.
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