Name Article Assessment ID SCN Infobox Stub types Length Remarks
Explorer 1 B-class 1958 Alpha 1 4 {{Infobox spaceflight}} 22,221
Unnamed Vanguard TV3BU Stub (none) US-spacecraft-stub 713
Explorer 2 Start {{Infobox spaceflight}} 3,581
Vanguard 1 Start 1958 Beta 2 00005 {{Infobox spaceflight}} 12,007
Explorer 3 Start 1958 Gamma 1 6 {{Infobox spaceflight}} 6,340
ISZ D-1 No.1 Non-existent - - - - -
Unnamed Vanguard TV5 Non-existent - - - - -
Sputnik 3 Start 1958 Delta 2 8 {{Infobox spaceflight}} 8,212 No epoch.
Unnamed Vanguard SLV-1 Non-existent - - - - -
Unnamed Vanguard SLV-3 Non-existent - - - - -
Pilot-1 Non-existent - - - - -
Explorer 4 Stub 1958 Epsilon 1 9 {{Infobox spaceflight}} US-spacecraft-stub 4,239
Pilot-2 Non-existent - - - - -
Pioneer 0 Start {{Infobox spaceflight}} 7,775
Pilot-3 Non-existent - - - - -
Explorer 5 Stub {{Infobox spaceflight}} US-spacecraft-stub 1,700
Pilot-4 Non-existent - - - - -
Pilot-5 Non-existent - - - - -
Pilot-6 Non-existent - - - - -
Luna E-1 No.1 Stub {{Infobox spaceflight}} USSR-spacecraft-stub 4,442
Unnamed Vanguard SLV-3 Non-existent - - - - -
Pioneer 1 Start 1958 Eta 1 110 {{Infobox spaceflight}} 7,296
Luna E-1 No.2 Stub {{Infobox spaceflight}} USSR-spacecraft-stub 3,652
Beacon Beacon (satellite) Non-existent - - - - -
Pioneer 2 Start {{Infobox spaceflight}} 4,989
Luna E-1 No.3 Stub {{Infobox spaceflight}} USSR-spacecraft-stub 3,037
Pioneer 3 Start 1958 Theta 1 111 {{Infobox spaceflight}} 5,839
SCORE SCORE (satellite) Start 10 {{Infobox spaceflight}} 9,150 No epoch.
Last check: Saturday 20 December 2014