HD 222641

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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
BD+44° 4473, HD 222641, HIP 116941, HR 8986, SAO 53292.
Database references
SIMBAD data

HD 222641 is a suspected variable star in the constellation Andromeda.

References[edit]

  1. ^ a b c d e 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 
  2. ^ a b 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, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272 
  3. ^ a b 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 
  4. ^ a b 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 
  5. ^ 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[edit]