Cygnus X-1 (black hole)

URI: https://gptkb.org/entity/Cygnus_X-1_(black_hole)
GPTKB entity
Statements (35)
Predicate Object
gptkbp:instanceOf gptkb:black_hole
gptkbp:accretionDisk yes
gptkbp:apparentMagnitude 8.95
gptkbp:category gptkb:high-mass_X-ray_binary
gptkb:microquasar
gptkb:binary_star_system
gptkbp:declination +35° 12′ 06″
gptkbp:discoveredBy gptkb:Tom_Bolton
gptkbp:discoveredIn 1971
gptkbp:distanceFromEarth about 6,070 light-years
gptkbp:firstBlackHoleCandidate yes
gptkbp:hasCompanion gptkb:HDE_226868
gptkbp:hasEventHorizon yes
gptkbp:hasJet yes
gptkbp:hostedBy gptkb:Milky_Way
gptkbp:locatedIn gptkb:constellation_Cygnus
gptkbp:mass about 21 solar masses
gptkbp:notableFor first strong black hole candidate
gptkbp:orbitType 5.6 days
gptkbp:partOf binary system
gptkbp:publishedIn gptkb:Astrophysical_Journal
gptkb:Nature
gptkbp:radioSource yes
gptkbp:rightAscension 19h 58m 21.7s
gptkbp:spectralType gptkb:O9.7_Iab
gptkbp:spin near maximal
gptkbp:studiedBy gptkb:NASA
gptkb:Chandra_X-ray_Observatory
gptkb:Hubble_Space_Telescope
gptkb:ESA
gptkbp:type gptkb:black_hole
gptkbp:X-raySource yes
gptkbp:bfsParent gptkb:HDE_226868
gptkbp:bfsLayer 7
https://www.w3.org/2000/01/rdf-schema#label Cygnus X-1 (black hole)