|
gptkbp:instanceOf
|
black hole
|
|
gptkbp:accretionDisk
|
yes
|
|
gptkbp:apparentMagnitude
|
8.95
|
|
gptkbp:category
|
binary star system
high-mass X-ray binary
microquasar
|
|
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
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Cygnus X-1 (black hole)
|
|
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
|
black hole
|
|
gptkbp:X-raySource
|
yes
|
|
gptkbp:bfsParent
|
gptkb:HDE_226868
|
|
gptkbp:bfsLayer
|
6
|