R Cassiopeiae
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This infobox, "Template:Starbox begin", is from Wikipedia. The list of its authors can be seen in its edit history page. The data in this infobox may not agree or state what Wikipedia states. |
| 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 | |
| Mass | 0.59[3] M☉ |
| Radius | 263[3]–310[4] R☉ |
| Diameter | 263[3]–310[4] D☉ |
| Luminosity | 3,837[3] L☉ |
| Temperature | 2,812[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]
R Cassiopeiae was once a candidate for the largest known star with a diameter of 1,800 D☉.[5]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 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. http://www.aanda.org/articles/aa/full/2007/41/aa8357-07/aa8357-07.html.Vizier catalog entry
- ↑ 2.0 2.1 2.2 Samus, N. N.Expression error: Unrecognized word "etal". (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.
- ↑ 3.0 3.1 3.2 3.3 Takeuti, Mine; Nakagawa, Akiharu; Kurayama, Tomoharu; Honma, Mareki (2013). "A Method to Estimate the Masses of Asymptotic Giant Branch Variable Stars". Publications of the Astronomical Society of Japan 65 (3): 60. Bibcode 2013PASJ...65...60T. doi:10.1093/pasj/65.3.60.
- ↑ 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". Astronomy and Astrophysics 523: A18. arXiv:1008.1083. Bibcode 2010A&A...523A..18D. doi:10.1051/0004-6361/200913771.
- ↑ Guide to the Universe: Stars and Galaxies By Lauren V. Jones
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