Vostok

4 satellites and probes

Spacecraft	Launch	Operator	Launch vehicle
Vostok 5	June 14, 1963	Soviet space program	Vostok-K
Vostok 3	August 11, 1962	Soviet space program	Vostok-K
Vostok 2	August 6, 1961	Soviet space program	Vostok-K
Vostok 1	April 12, 1961	Soviet space program	Vostok-K