Juno II | Pioneer 4

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.

Mission Details

  • Launch date: March 3, 1959 at 05:10 AM UTC
  • Launch vehicle: Juno II
  • Operator: National Aeronautics and Space Administration
  • Launch site: Cape Canaveral SFS, FL, USA
  • Mission type: Lunar Exploration