Upsilon1 Cassiopeiae
- For other star systems with this Bayer designation, see Upsilon Cassiopeiae.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 00h 55m 00.155s[1] |
| Declination | +58° 58′ 21.71″[1] |
| Apparent magnitude (V) | +4.83 |
| Characteristics | |
| Spectral type | K2III |
| U−B color index | +1.26 |
| B−V color index | +1.21 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | −23 km/s |
| Proper motion (μ) | RA: −33.50 ± 0.36[1] mas/yr Dec.: −40.82 ± 0.33[1] mas/yr |
| Parallax (π) | 9.93 ± 0.49[1] mas |
| Distance | 330 ± 20 ly (101 ± 5 pc) |
| Absolute magnitude (MV) | −0.64 |
| Other designations | |
Upsilon1 Cassiopeiae (υ1 Cas, υ1 Cassiopeiae) is a triple star system in the constellation Cassiopeia. υ1 Cassiopeiae is an orange K-type giant with an apparent magnitude of +4.83. It is approximately 330 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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