RW Ursae Minoris

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RW Ursae Minoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Ursa Minor
Right ascension 16h 47m 54.75s[1]
Declination +77° 02′ 12.2″[1]
Distance16,300 ly
({{{dist_pc}}} pc)

RW Ursae Minoris (Nova Ursae Minoris 1956) is a cataclysmic variable star system that flared up as a nova in the constellation Ursa Minor in 1956. Before the eruption, it had an apparent magnitude of 21 before flaring up to an approximate magnitude of 6. In 2003, it was still two magnitudes brighter than its baseline, and dimming at a rate of 0.02 magnitude a year. Its distance has been calculated as 5000 ± 800 parsecs (16,300 light-years), which puts its location in the galactic halo.[2]


  1. ^ a b "V* RW UMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 May 2014. 
  2. ^ Bianchini, A.; Tappert, C.; Canterna, R.; Tamburini, F.; Osborne, H.; Cantrell, K. (2003). "RW Ursae Minoris (1956): An Evolving Postnova System". The Publications of the Astronomical Society of the Pacific. 115 (809): 811–18. Bibcode:2003PASP..115..811B. doi:10.1086/376434.