Juno-I | Explorer 4

A Juno-I rocket launched Juno-I | Explorer 4 from Cape Canaveral SFS, FL, USA, targeting MEO.

Launch time
Status
SUCCESS
Operator
Army Ballistic Missile Agency
Mission type
Earth Science
Rocket
Juno-I
Launch site
Cape Canaveral SFS, FL, USA
Launch pad
Launch Complex 5
Payload
—
Target orbit
MEO
Juno-I | Explorer 4 cover image

Mission timeline

  1. 1958-07-26T15:00:57.000Z
    Liftoff
    Juno-I lifts off from Cape Canaveral SFS, FL, USA.
  2. Max-Q
    Juno-I passes through max aerodynamic pressure (Max Q).
  3. Main engine cutoff (MECO)
    Main engine cutoff — the first stage shuts down as planned.
  4. Stage separation
    Stage separation — the first stage separates cleanly.
  5. Second-stage ignition
    Second-stage engine ignites for the next phase of flight.
  6. Orbit insertion
    Orbit insertion confirmed — the vehicle is now in MEO.
  7. Mission success
    Mission success — all objectives completed.

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