Juno II | Pioneer 4

A Juno II rocket launched Juno II | Pioneer 4 from Cape Canaveral SFS, FL, USA, targeting Lunar flyby.

Launch time
Status
SUCCESS
Operator
National Aeronautics and Space Administration
Mission type
Lunar Exploration
Rocket
Juno II
Launch site
Cape Canaveral SFS, FL, USA
Launch pad
Launch Complex 5
Payload
—
Target orbit
Lunar flyby
Juno II | Pioneer 4 cover image

Mission timeline

  1. 1959-03-03T05:10:56.000Z
    Liftoff
    Liftoff confirmed — Juno II is airborne.
  2. Max-Q
    Max Q — Juno II endures peak structural stress during ascent.
  3. Main engine cutoff (MECO)
    First-stage main engine cutoff (MECO) confirmed.
  4. Stage separation
    The spent first stage separates from the upper stage.
  5. Second-stage ignition
    Upper stage ignites, continuing the journey toward orbit.
  6. Orbit insertion
    The mission reaches Lunar flyby, successfully entering orbit.
  7. Mission success
    The mission concludes successfully.

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