HD 223229

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HD 223229
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension 23h 47m 33.04940s[1]
Declination +46° 49′ 57.2178″[1]
Apparent magnitude (V) 6.07[2]
Spectral type B3IV[3]
U−B color index −0.66[2]
B−V color index −0.14[2]
Radial velocity (Rv) −9.3±2.2[4] km/s
Proper motion (μ) RA: +1.03±0.35[1] mas/yr
Dec.: −6.64±0.45[1] mas/yr
Parallax (π) 3.13 ± 0.57[1] mas
Distance approx. 1,000 ly
(approx. 320 pc)
Mass 6.31±0.49[5] M
Luminosity (bolometric) 1,762[5] L
Temperature 17,900[5] K
Rotational velocity (v sin i) 30[6] km/s
Other designations
BD+46° 416, HD 223229, HIP 117340, HR 9011, SAO 53374.
Database references

HD 223229 is a suspected variable star in the northern constellation of Andromeda. It is a double star consisting of a magnitude 6.11 primary and a magnitude 8.73 companion. The pair have an angular separation of 0.80 along a position angle of 250°, as of 2009.[7] The primary is a B-type subgiant star with a stellar classification of B3IV.[3] It has an estimated 6.3 times the mass of the Sun, with an effective temperature of 17,900 K.[5]


  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752Freely accessible, doi:10.1051/0004-6361:20078357 
  2. ^ a b c Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N 
  3. ^ a b Lesh, Janet Rountree (December 1968), "The Kinematics of the Gould Belt: an Expanding Group?", Astrophysical Journal Supplement, 17: 371, Bibcode:1968ApJS...17..371L, doi:10.1086/190179 
  4. ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  5. ^ a b c d Hohle, M. M.; et al. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, Bibcode:2010AN....331..349H, arXiv:1003.2335Freely accessible, doi:10.1002/asna.200911355 
  6. ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590 
  7. ^ Mason, B. D.; et al. (2014), The Washington Visual Double Star Catalog, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22 

External links[edit]