4 Cassiopeiae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 24m 50.262s[1] |
| Declination | +62° 16′ 58.11″[1] |
| Apparent magnitude (V) | +4.96 |
| Characteristics | |
| Spectral type | M1III |
| U−B color index | +2.07 |
| B−V color index | +1.68 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | −37 km/s |
| Proper motion (μ) | RA: 12.29 ± 0.20[1] mas/yr Dec.: −12.44 ± 0.21[1] mas/yr |
| Parallax (π) | 4.15 ± 0.21 mas[1] |
| Distance | 790 ± 40 ly (240 ± 10 pc) |
| Absolute magnitude (MV) | −1.9 |
| Other designations | |
4 Cassiopeiae is a star in the constellation Cassiopeia. It is a M-type red giant with an apparent magnitude of +4.96 and is approximately 790 light-years[1] from Earth.
In the sky, the open cluster Messier 52 is 40' to the south of it.
References
- ^ a b c d e f 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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