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.