Scout X-4 | San Marco 1
Operated by National Research Council, the Test Flight mission Scout X-4 | San Marco 1 delivered its payload into LEO.
- Launch time
- Status
- SUCCESS
- Operator
- National Research Council
- Mission type
- Test Flight
- Rocket
- Scout X-4
- Launch site
- Wallops Flight Facility, Virginia, USA
- Launch pad
- Launch Area 3A
- Payload
- —
- Target orbit
- LEO

Mission timeline
- 1964-12-15T20:20:04.000ZScout X-4 clears the pad at Wallops Flight Facility, Virginia, USA and begins its ascent.
- Scout X-4 pushes through the region of maximum dynamic pressure.
- First stage completes its burn; main engine cutoff.
- First and second stages separate on schedule.
- Second-stage ignition confirmed.
- Orbital insertion burn complete; now in LEO.
- Mission declared a complete success.