Xi Arietis

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Xi Arietis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aries
Right ascension 02h 24m 49.05655s[1]
Declination +10° 36′ 38.0236″[1]
Apparent magnitude (V) +5.46[2]
Distance 872 ± 68[1] ly
(267 ± 21 pc)
Spectral type B7 IV[3]
Other designations
24 Arietis, BD+09 316, FK5 2164, HD 14951, HIP 11249, HR 702, SAO 92932.[4]
Database references

Xi Arietis (ξ Ari, ξ Arietis) is the Bayer designation for a star in the northern constellation of Aries. It has an apparent visual magnitude of 5.46,[2] and so is dimly visible to the naked eye. Based upon an annual parallax shift of 3.74 ± 0.29 mas,[1] it is 872 ± 68 light-years (267 ± 21 parsecs) distant from the Earth.

The spectrum of this star matches a stellar classification of B7 IV,[3] indicating that it is a subgiant star that has exhausted the supply of hydrogen at its core and is in the process of evolving into a giant star. Xi Arietis was once a designation for Psi Ceti (ψ Cet, ψ Ceti).[5]


  1. ^ a b c d van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b Crawford, D. L.; Barnes, J. V.; Golson, J. C. (1971), "Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere", The Astronomical Journal, 76: 1058, Bibcode:1971AJ.....76.1058C, doi:10.1086/111220. 
  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. ^ "ksi Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-08. 
  5. ^ Bayer’s Uranometria and Bayer letters

External links[edit]