EntityQ73472· pop 5· linked from 63 articlesDiscoverer 19Sign in to savereconnaissance satelliteConnectionsCoronaEntityMissile Defense Alarm SystemEntityorbital inclinationEntityProject EchoEntityCourier 1BEntityNASAConceptartificial satelliteEntityUnited States Air ForceEntityorbital periodEntityapsisEntitylow Earth orbitEntityVostok programmeEntityDefense Advanced Research Projects AgencyEntityVandenberg Space Force BaseEntityLockheed CorporationEntitygeocentric orbitEntityInternational DesignatorEntityKorabl-Sputnik 2EntitySatellite Catalog NumberEntityKorabl-Sputnik 1EntityCategoriesSpacecraft launched in 1960Spacecraft which reentered in 1961