Launches
Launch SuccessfulNational Aeronautics and Space Administration

Pioneer 4

Juno II

This mission has flown

March 3, 1959

Mission overview

Pioneer 4 was a spin-stabilized spacecraft intended as a lunar probe and successfully performed a fly by of the moon at a height of 58983km. Unfortunately it didn't come close enough to trigger its photoelectric sensor.

Rocket

Juno II

Mission type

Lunar Exploration

Payload

Pioneer 4

Launch complex

Launch Complex 5 · Cape Canaveral SFS, FL, USA

Launch date

March 3, 1959

Launch window

Instantaneous window

Orbit reached

Lunar flyby

Launch trajectory

The launch pad has not been identified. No flight path is shown.

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Mission updates

Live updates from our team at the press site will appear here on launch day.