| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:satellite
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:alsoKnownAs
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Key_Hole
                                        
                                         
                                    
                                        
                                            
                                            Crystal
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:class
                                    
                                 | 
                                
                                    
                                        
                                            
                                            yes
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:countryOfOrigin
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:United_States
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:dataRate
                                    
                                 | 
                                
                                    
                                        
                                            
                                            real-time digital
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:diameter
                                    
                                 | 
                                
                                    
                                        
                                            
                                            estimated 3 meters
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:lastKnownLaunch
                                    
                                 | 
                                
                                    
                                        
                                            
                                            2021
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:launchDate
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1976
                                        
                                        
                                         
                                    
                                        
                                            
                                            December 19, 1976
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:launchVehicle
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Delta_IV_Heavy
                                        
                                         
                                    
                                        
                                            gptkb:Titan_III
                                        
                                         
                                    
                                        
                                            gptkb:Titan_IV
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:length
                                    
                                 | 
                                
                                    
                                        
                                            
                                            estimated 19.5 meters
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:manufacturer
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Lockheed_Martin
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:mass
                                    
                                 | 
                                
                                    
                                        
                                            
                                            estimated 13,000 kg
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notableEvent
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1984 leak by Samuel Loring Morison
                                        
                                        
                                         
                                    
                                        
                                            
                                            2019 Trump tweet of classified image
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notableFeature
                                    
                                 | 
                                
                                    
                                        
                                            
                                            first US satellite to use digital imaging
                                        
                                        
                                         
                                    
                                        
                                            
                                            images relayed to ground in real time
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:numberBuilt
                                    
                                 | 
                                
                                    
                                        
                                            
                                            at least 16
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:operator
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:National_Reconnaissance_Office
                                        
                                         
                                    
                                        
                                            gptkb:United_States
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:orbitType
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Low_Earth_Orbit
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:precededBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:KH-9_Hexagon
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:primaryUser
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:US_intelligence_agencies
                                        
                                         
                                    
                                        
                                            gptkb:US_military
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:purpose
                                    
                                 | 
                                
                                    
                                        
                                            
                                            optical reconnaissance
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:relatedTo
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Hubble_Space_Telescope
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:resolution
                                    
                                 | 
                                
                                    
                                        
                                            
                                            estimated 10 cm to 15 cm
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:signature
                                    
                                 | 
                                
                                    
                                        
                                            
                                            electro-optical
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:status
                                    
                                 | 
                                
                                    
                                        
                                            
                                            active
                                        
                                        
                                         
                                    
                                        
                                            
                                            retired
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:successor
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Evolved_Enhanced_CRYSTAL_(EEC)
                                        
                                         
                                    
                                        
                                            
                                            KH-12
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:National_Reconnaissance_Office
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            5
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            KH-11 satellites
                                        
                                        
                                         
                                    
                                 |