EntityQ906157· pop 7· linked from 67 articlesDiscoverer 2Sign in to saveAmerican military reconnaissance satelliteConnectionsCoronaEntitySoviet UnionConceptInternational Standard Book NumberEntitySvalbardEntityUnited States Air ForceEntityorbital periodEntityOCLC, Inc.EntityapsisEntityGeneral ElectricCompanylow Earth orbitEntityLuna 1Entityorbital inclinationEntityUnited States Department of DefenseConceptorbital eccentricityEntityLuna 2EntityepochEntityLockheed U-2EntityDefense Advanced Research Projects AgencyEntityLuna 3Entityreconnaissance satelliteEntityCategoriesSpacecraft launched in 1959Spacecraft which reentered in 1959