Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:OB_association
|
| gptkbp:age |
5 million years
|
| gptkbp:contains |
gptkb:Cygnus_X-1
gptkb:B-type_stars gptkb:O-type_stars young stars variable stars massive stars supergiant stars stellar clusters |
| gptkbp:discoveredBy |
gptkb:William_W._Morgan
|
| gptkbp:distanceFromEarth |
about 7,000 light-years
|
| gptkbp:locatedIn |
gptkb:Cygnus_constellation
|
| gptkbp:notableFor |
contains Cygnus X-1, a black hole candidate
|
| gptkbp:partOf |
gptkb:Milky_Way_galaxy
|
| gptkbp:bfsParent |
gptkb:Constellation_Cygnus
|
| gptkbp:bfsLayer |
8
|
| http://www.w3.org/2000/01/rdf-schema#label |
Cygnus OB3 association
|