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Satellites and probes

Satellites and probes

7,621 satellites and probes

Spacecraft	Launch	Operator	Launch vehicle
Vostok 2	August 6, 1961	Soviet space program	Vostok-K
Discoverer 28	August 4, 1961	—	Thor-Agena B
Discoverer 27	July 21, 1961	—	Thor-Agena B
Mercury-Redstone 4	July 21, 1961	National Aeronautics and Space Administration	Mercury-Redstone Launch Vehicle
MIDAS 3	July 12, 1961	United States Air Force	Atlas-Agena B
TIROS-3	July 12, 1961	National Aeronautics and Space Administration, Environmental Science Services Administration	Thor-Delta
Discoverer 26	July 7, 1961	—	Thor-Agena B
Explorer S-55	June 30, 1961	—	Scout X-1
Explorer S55	June 30, 1961	—	—
GRAB 3	June 29, 1961	—	Thor-Ablestar
Injun 1	June 29, 1961	University of Iowa	Thor-Ablestar
Transit 4A	June 29, 1961	—	Thor-Ablestar
Discoverer 25	June 16, 1961	—	Thor-Agena B
Discoverer 24	June 8, 1961	—	Thor-Agena B
Explorer S45A	May 24, 1961	—	Juno II
Mercury-Redstone 3	May 5, 1961	National Aeronautics and Space Administration	Mercury-Redstone Launch Vehicle
Explorer 11	April 27, 1961	—	Juno II
Vostok 1	April 12, 1961	Soviet space program	Vostok-K
Discoverer 23	April 8, 1961	—	Thor-Agena B
Discoverer 22	March 30, 1961	—	Thor-Agena B
Explorer 10	March 25, 1961	National Aeronautics and Space Administration	Thor-Delta
Korabl-Sputnik 5	March 25, 1961	Soviet space program, Academy of Sciences of the USSR	Vostok-K
Korabl-Sputnik 4	March 9, 1961	Soviet space program	Vostok-K
Explorer S-45	February 25, 1961	—	Juno II
Explorer S45	February 24, 1961	—	Juno
LOFTI-1	February 22, 1961	—	Thor-Ablestar
Transit 3B	February 22, 1961	—	Thor-Ablestar
Discoverer 21	February 18, 1961	—	Thor-Agena B
Discoverer 20	February 17, 1961	—	Thor-Agena B
Explorer 9	February 16, 1961	National Aeronautics and Space Administration	Scout X-1
Sputnik 8	February 12, 1961	—	—
Venera 1	February 12, 1961	S.P. Korolev Rocket and Space Corporation Energia	Molniya
Tyazhely Sputnik	February 4, 1961	—	Molniya
SAMOS 2	January 31, 1961	—	Atlas-Agena A
Discoverer 19	December 20, 1960	—	Thor-Agena B
Pioneer P-31	December 15, 1960	National Aeronautics and Space Administration	Atlas-Able
Discoverer 18	December 7, 1960	—	Thor-Agena B
S-56	December 4, 1960	—	Scout X-1
Korabl-Sputnik 3	December 1, 1960	Academy of Sciences of the USSR, Soviet space program	Vostok-L
Solrad 2	November 30, 1960	—	Thor-Ablestar
TIROS-2	November 23, 1960	National Aeronautics and Space Administration, Environmental Science Services Administration	Thor-Delta
Discoverer 17	November 12, 1960	—	Thor-Agena B
Explorer 8	November 3, 1960	—	Juno II
Discoverer 16	October 26, 1960	—	Thor-Agena B
Mars 1M No.2	October 14, 1960	—	Molniya
SAMOS 1	October 11, 1960	—	Atlas-Agena A
Mars 1M	October 10, 1960	—	—
Mars 1M No.1	October 10, 1960	—	Molniya