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About: 47 Cygni     Goto   Sponge   NotDistinct   Permalink

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

Type: Thingplacedbo:Locationschema:Placecelestial bodyyago:CelestialBody109239740yago:NaturalObject100019128yago:Object100002684yago:PhysicalEntity100001930yago:WikicatK-typeStarsyago:WikicatK-typeSupergiantsstaryago:Star109444100yago:Supergiant109450708yago:Whole100003553yago:WikicatFlamsteedObjects New Facet based on Instances of this Class

47 Cygni is a triple star system in the northern constellation of Cygnus, and is located around 4,000 light years from the Earth. It is visible to the naked eye with a combined apparent visual magnitude of 4.61. The system is moving closer to the Earth with a heliocentric radial velocity of −4.6 km/s. The supergiant primary is a slow irregular variable with an amplitude of about 0.1 magnitudes. Its close companion has 57% of the mass of the Sun. The secondary is a hot B-type main-sequence star, but still 2.5 magnitudes fainter than the primary.