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) | +9.97 |
| Characteristics | |
| Spectral type | M7IIIe |
| U−B color index | +0.08 |
| B−V color index | +1.83 |
| Variable type | Mira |
| 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) |
| Absolute magnitude (MV) | +4.83 |
| Other designations | |
R Cassiopeiae (R Cas) is a star in the constellation Cassiopeia.
R Cassiopeiae is a M-type red giant with a mean apparent magnitude of +9.97. It is classified as a Mira-type variable star and its brightness varies from magnitude +4.7 to +13.5 with a period of 430.5 days. It is approximately 410 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
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