AN Ursae Majoris

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AN Ursae Majoris

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Major
Right ascension 11h 04m 25.71s[1]
Declination +45° 03′ 15.0″[1]
Apparent magnitude (V) 14.90–20.2[2]
Characteristics
Spectral type CV[1]
Variable type E+XRM[2]
Astrometry
Radial velocity (Rv) −43[1] km/s
Other designations
PG 1101+453, S 07738, X 11016+454[2]
Database references
SIMBAD data

AN Ursae Majoris is a variable star in the constellation Ursa Major. This star has the strongest known magnetic field among cataclysmic variables, with a field strength of 230 million gauss (23 kT). This object, along with AM Herculis, define a class of objects known as polars.[3]

References[edit]

  1. ^ a b c d "V* AN UMa—Cataclysmic Var. AM Her type". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-16. 
  2. ^ a b c "Query= AN UMa". General Catalogue of Variable Stars. Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-16. 
  3. ^ Krzeminski, W. & Serkowski, K. (August 1977). "Extremely high circular polarization of AN Ursae Majoris". The Astrophysical Journal Letters. 216: L45. Bibcode:1977ApJ...216L..45K. doi:10.1086/182506.