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) | ±0.001 6.551[2] |
Characteristics | |
Spectral type | K5III |
U−B color index | 1.75[3] |
B−V color index | 1.51[3] |
Astrometry | |
Radial velocity (Rv) | ±0.21 −12.56[2] km/s |
Proper motion (μ) | RA: ±0.30 −19.65[1] mas/yr Dec.: ±0.27 −17.84[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] | ±0.09 −0.27[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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