WBeacon (satelita)
WDiscoverer 0
WDiscoverer 1WDiscoverer 2WDiscoverer 3WDiscoverer 4WDiscoverer 5WDiscoverer 6WDiscoverer 7WDiscoverer 8
WExplorer 6
WExplorer 7
WŁuna 1
WŁuna 3
WMercury-Little Joe 2
WPioneer 4
WPioneer P 3
WVanguard 2
WVanguard 3