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About: U Aquarii     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatRCoronaeBorealisVariables, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingplacedbo:Locationschema:Placecelestial bodyyago:WikicatVariableStarsyago:WikicatObjectsNamedWithVariableStarDesignationsyago:CelestialBody109239740yago:NaturalObject100019128yago:Object100002684yago:PhysicalEntity100001930yago:WikicatHipparcosObjectsstaryago:Star109444100yago:Thing100002452yago:Variable109468959yago:VariableStar109469152yago:Whole100003553yago:WikicatRCoronaeBorealisVariables New Facet based on Instances of this Class

U Aquarii, abbreviated U Aqr, is a variable star in the equatorial constellation of Aquarius. It is invisible to the naked eye, having an apparent visual magnitude that ranges from 10.6 down to as low as 15.9. Based on parallax measurements, the distance to this star is approximately 38 kly (12 kpc). In 1990, W. A. Lawson and associates provided a distance estimate of 43 kly (13.2 kpc) based on the assumption of a bolometric magnitude of −5. It appears to lie several kiloparsecs below the galactic plane, and thus may belong to an old stellar population.