HD 222641
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 42m 14.66667s[1] |
| Declination | +44° 59′ 30.1690″[1] |
| Apparent magnitude (V) | 6.551±0.001[2] |
| Characteristics | |
| Spectral type | K5III |
| U−B color index | 1.75[3] |
| B−V color index | 1.51[3] |
| Astrometry | |
| Radial velocity (Rv) | −12.56±0.21[2] 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) |
| Details | |
| Surface gravity (log g) | 2.0[4] cgs |
| Temperature | 4,070[4] K |
| Metallicity [Fe/H] | −0.27±0.09[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 222641 is a suspected variable star in the constellation Andromeda.
References
- 1 2 3 4 5 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
- 1 2 Famaey, B.; et al. (2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics 430: 165–186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272
- 1 2 Oja, T. (August 1991), "UBV photometry of stars whose positions are accurately known. VI", Astronomy and Astrophysics Supplement Series 89 (2): 415–419, Bibcode:1991A&AS...89..415O
- 1 2 Brown, Jeffery A.; et al. (October 1989), "A search for lithium-rich giant stars", Astrophysical Journal Supplement Series 71: 293−322, Bibcode:1989ApJS...71..293B, doi:10.1086/191375
- ↑ Taylor, B. J. (February 1999), "Catalogs of temperatures and [Fe/H] averages for evolved G and K stars", Astronomy and Astrophysics Supplement 134: 523–524, Bibcode:1999A&AS..134..523T, doi:10.1051/aas:1999153
External links
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