55 Arietis

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
55 Arietis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aries
Right ascension  03h 09m 36.74277s[1]
Declination +29° 04′ 37.4956″[1]
Apparent magnitude (V) 5.72[2]
Distanceapprox. 1,060 ly
(approx. 320[1] pc)
Spectral typeB8 III[3]
Other designations
BD+28 499, FK5 1088, HD 19548, HIP 14677, HR 944, SAO 75757.[4]

55 Arietis (abbreviated 55 Ari) is a star in the northern constellation of Aries. 55 Arietis is the Flamsteed designation. It is faintly visible to the naked eye with an apparent visual magnitude of 5.72.[2] Based upon an annual parallax shift of 3.09 ± 0.49 mas,[1] it is approximately 1,060 light-years (320 parsecs) distant from Earth, give or take a 170 light-year margin of error. The spectrum of this star matches a B-type giant with a stellar classification of B8 III.[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:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
  2. ^ a b 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 Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
  4. ^ "55 Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-17.

External links[edit]