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About: V838 Herculis     Goto   Sponge   Distinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.org associated with source document(s)

Type: Thingplacedbo:Locationschema:Placecelestial bodyyago:WikicatAstronomicalObjectsDiscoveredIn1991yago:WikicatNovaeyago:WikicatObjectsNamedWithVariableStarDesignationsyago:CelestialBody109239740yago:NaturalObject100019128yago:Nova109374493yago:Object100002684yago:PhysicalEntity100001930staryago:Star109444100yago:Whole100003553 New Facet based on Instances of this Class

V838 Herculis, also known as Nova Herculis 1991, was a nova which occurred in the constellation Hercules in 1991. It was discovered by George Alcock of Yaxley, Cambridgeshire, England at 4:35 UT on the morning of 25 March 1991. He found it with 10×50 binoculars, and on that morning its apparent visual magnitude was 5 (making it visible to the naked eye). Palomar Sky Survey plates showed that before the outburst, the star was at photographic magnitude 20.6 (blue light) and 18.25 (red light).