Statements (24)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:military_satellite_constellation
|
| gptkbp:alsoKnownAs |
gptkb:SDS
|
| gptkbp:countryOfOrigin |
gptkb:United_States
|
| gptkbp:launchDate |
1976
|
| gptkbp:manufacturer |
gptkb:TRW
gptkb:Northrop_Grumman |
| gptkbp:numberOfSpecies |
three
|
| gptkbp:operatedBy |
gptkb:United_States_Air_Force
|
| gptkbp:orbitType |
geosynchronous orbit
highly elliptical orbit |
| gptkbp:purpose |
military communications
relay of reconnaissance satellite data |
| gptkbp:relatedTo |
gptkb:Defense_Satellite_Communications_System
gptkb:Milstar gptkb:Quasar_(satellite) |
| gptkbp:SDS-1FirstLaunch |
1976
|
| gptkbp:SDS-2FirstLaunch |
1989
|
| gptkbp:SDS-3FirstLaunch |
1998
|
| gptkbp:status |
operational
|
| gptkbp:usedBy |
gptkb:National_Reconnaissance_Office
gptkb:United_States_Department_of_Defense |
| gptkbp:bfsParent |
gptkb:Quasar_satellites
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
Satellite Data System
|