Scout X-4 | Explorer 20

The Earth Science flight Scout X-4 | Explorer 20 departed Vandenberg SFB, CA, USA atop a Scout X-4, bound for LEO.

Launch time
Status
SUCCESS
Operator
National Aeronautics and Space Administration
Mission type
Earth Science
Rocket
Scout X-4
Launch site
Vandenberg SFB, CA, USA
Launch pad
Space Launch Complex 5
Payload
—
Target orbit
LEO
Scout X-4 | Explorer 20 cover image

Mission timeline

  1. 1964-08-25T13:43:00.000Z
    Liftoff
    Scout X-4 lifts off from Vandenberg SFB, CA, USA.
  2. Max-Q
    Scout X-4 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 LEO.
  7. Mission success
    Mission success — all objectives completed.

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