| gptkbp:instanceOf | gptkb:satellite 
 | 
                        
                            
                                | gptkbp:countryOfOrigin | gptkb:United_States 
 | 
                        
                            
                                | gptkbp:discoveredBy | evidence of water ice at lunar poles 
 | 
                        
                            
                                | gptkbp:duration | 19 months 
 | 
                        
                            
                                | gptkbp:endDate | 1999-07-31 
 | 
                        
                            
                                | gptkbp:event | deliberate impact into lunar south pole 
 | 
                        
                            
                                | gptkbp:launchDate | 1998-01-07 
 | 
                        
                            
                                | gptkbp:launchSite | gptkb:Cape_Canaveral_Space_Launch_Complex_46 
 | 
                        
                            
                                | gptkbp:launchVehicle | gptkb:Athena_II 
 | 
                        
                            
                                | gptkbp:missionType | gptkb:Moon 
 | 
                        
                            
                                | gptkbp:objective | measure magnetic and gravity fields map the Moon's surface composition
 search for lunar polar ice
 
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                                | gptkbp:operatedBy | gptkb:NASA 
 | 
                        
                            
                                | gptkbp:orbitType | polar orbit 
 | 
                        
                            
                                | gptkbp:partOf | gptkb:NASA_Discovery_Program 
 | 
                        
                            
                                | gptkbp:principalInvestigator | Alan Binder 
 | 
                        
                            
                                | gptkbp:spacecraftMass | 296 kg 
 | 
                        
                            
                                | gptkbp:status | completed 
 | 
                        
                            
                                | gptkbp:website | https://lunarprospector.arc.nasa.gov/ 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Rocky_McGaugh gptkb:Lunar_Prospector_Neutron_Spectrometer
 gptkb:Rick_Elphic
 gptkb:Moon_(Lunar_Prospector_mission)
 
 | 
                        
                            
                                | gptkbp:bfsLayer | 8 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Lunar Prospector mission 
 |