Astronomy:HD 222641
From HandWiki
Observation data Equinox J2000.0]] (ICRS) | |
---|---|
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
- ↑ Jump up to: 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, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ Jump up to: 2.0 2.1 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, doi:10.1051/0004-6361:20041272, Bibcode: 2005A&A...430..165F
- ↑ Jump up to: 3.0 3.1 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
- ↑ Jump up to: 4.0 4.1 Brown, Jeffery A. et al. (October 1989), "A search for lithium-rich giant stars", Astrophysical Journal Supplement Series 71: 293–322, doi:10.1086/191375, Bibcode: 1989ApJS...71..293B
- ↑ 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, doi:10.1051/aas:1999153, Bibcode: 1999A&AS..134..523T
External links