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 | Polar[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
- 1 2 3 4 "V* AN UMa—Cataclysmic Var. AM Her type". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-16.
- 1 2 3 "Query= AN UMa". General Catalogue of Variable Stars. Centre de Données astronomiques de Strasbourg. Retrieved 2009-12-16.
- ↑ 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.
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