R Cassiopeiae
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Cassiopeia |
| Right ascension | 23h58m24.8s |
| Declination | +51°23′19″ |
| 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: 84.39 mas/yr Dec.: 18.07 mas/yr |
| Parallax (π) | 9.37 ± 1.10 mas |
| Distance | 348 ly (107 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 348 light years from Earth.
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