| gptkbp:instanceOf | gptkb:satellite 
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                                | gptkbp:apogee | heliocentric orbit, not Earth orbit 
 | 
                        
                            
                                | gptkbp:communicationBand | gptkb:S-band X-band
 
 | 
                        
                            
                                | gptkbp:component | gptkb:STEREO-A gptkb:STEREO-B
 
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                                | gptkbp:duration | extended planned 2 years
 
 | 
                        
                            
                                | gptkbp:fullName | gptkb:Solar_TErrestrial_RElations_Observatory 
 | 
                        
                            
                                | gptkbp:fundedBy | gptkb:NASA_Heliophysics_Division 
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                                | gptkbp:goal | study the Sun and its coronal mass ejections 
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                                | gptkbp:instrument | gptkb:IMPACT gptkb:PLASTIC
 gptkb:SECCHI
 gptkb:SWAVES
 
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                                | gptkbp:lastContact | 2014-10-01 
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                                | gptkbp:launchDate | 2006-10-26 
 | 
                        
                            
                                | gptkbp:launchSite | gptkb:Cape_Canaveral_SLC-17B 
 | 
                        
                            
                                | gptkbp:launchVehicle | gptkb:Delta_II_7925-10L 
 | 
                        
                            
                                | gptkbp:lostContactWith | gptkb:STEREO-B 
 | 
                        
                            
                                | gptkbp:manufacturer | gptkb:Applied_Physics_Laboratory 
 | 
                        
                            
                                | gptkbp:mass | each ~620 kg 
 | 
                        
                            
                                | gptkbp:missionType | solar observation 
 | 
                        
                            
                                | gptkbp:name | gptkb:STEREO 
 | 
                        
                            
                                | gptkbp:notableProject | gptkb:Michael_Kaiser 
 | 
                        
                            
                                | gptkbp:numberOfSatellites | 2 
 | 
                        
                            
                                | gptkbp:operator | gptkb:NASA 
 | 
                        
                            
                                | gptkbp:orbitType | heliocentric 
 | 
                        
                            
                                | gptkbp:perihelion | heliocentric orbit, not Earth orbit 
 | 
                        
                            
                                | gptkbp:powers | each ~475 W 
 | 
                        
                            
                                | gptkbp:projectScientist | gptkb:Joseph_Gurman 
 | 
                        
                            
                                | gptkbp:provides | stereoscopic images of the Sun 
 | 
                        
                            
                                | gptkbp:regainedContactDate | 2016-08-21 
 | 
                        
                            
                                | gptkbp:regainedContactStatus | briefly 
 | 
                        
                            
                                | gptkbp:regainedContactWith | gptkb:STEREO-B 
 | 
                        
                            
                                | gptkbp:relatedTo | gptkb:Solar_Orbiter gptkb:Parker_Solar_Probe
 gptkb:SOHO
 
 | 
                        
                            
                                | gptkbp:status | operational 
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                                | gptkbp:STEREO-A | ahead of Earth 
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                                | gptkbp:STEREO-B | behind Earth 
 | 
                        
                            
                                | gptkbp:studies | coronal mass ejections solar wind
 solar energetic particles
 solar corona
 
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                                | gptkbp:website | https://stereo.gsfc.nasa.gov/ 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Delta_II_family gptkb:Delta_II
 
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                                | gptkbp:bfsLayer | 7 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | STEREO spacecraft 
 |