54 Arietis

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54 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aries
Right ascension 03h 08m 21.10919s[1]
Declination +18° 47′ 42.1845″[1]
Apparent magnitude (V) 6.27[2]
Distance 766 ly
(235[1] pc)
Spectral type M0 III[3]
Other designations
BD+18 414, FK5 4285, HD 19460, HIP 14586, HR 940, SAO 93293.[4]

54 Arietis (abbreviated 54 Ari) is a star in the northern constellation of Aries. 54 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 6.26. Based upon an annual parallax shift of 4.26 ± 0.73 mas,[1] it is approximately 766 light-years (235 parsecs) distant from Earth. The brightness of the star is diminished by 0.15[5] in magnitude from extinction caused by interstellar gas and dust. This is a red giant star with a stellar classification of M0 III, and is evolving along the asymptotic giant branch.[6] It varies slightly in brightness, with a periodicity of 6.2 days and an amplitude change of 0.0096 in magnitude.[3]


  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. ^ Argue, A. N. (1966), "UBV photometry of 550 F, G and K type stars", Monthly Notices of the Royal Astronomical Society, 133: 475–493, Bibcode:1966MNRAS.133..475A, doi:10.1093/mnras/133.4.475. 
  3. ^ a b Koen, Chris; Eyer, Laurent (March 2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society, 331 (1): 45–59, arXiv:astro-ph/0112194Freely accessible, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x. 
  4. ^ "54 Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-07-18. 
  5. ^ Famaey, B.; et al. (January 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/0409579Freely accessible, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272. 
  6. ^ Eggen, Olin J. (July 1992), "Asymptotic giant branch stars near the sun", Astronomical Journal, 104 (1): 275–313, Bibcode:1992AJ....104..275E, doi:10.1086/116239. 

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