HD 222641
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 42m 14.667s[1] |
| Declination | +44° 59′ 30.17″[1] |
| Apparent magnitude (V) | 6.424 |
| Characteristics | |
| Spectral type | K5III |
| U−B color index | 1.75 |
| B−V color index | 1.51 |
| Variable type | Variable star |
| Astrometry | |
| Radial velocity (Rv) | -10.4 km/s |
| Proper motion (μ) | RA: -19.65 ± 0.30[1] mas/yr Dec.: -17.84 ± 0.27[1] mas/yr |
| Parallax (π) | 4.40 ± 0.39[1] mas |
| Distance | 740 ± 70 ly (230 ± 20 pc) |
| Absolute magnitude (MV) | 7.956 |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 222641 a is variable star.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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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