Juno II | Pioneer 3
Operated by National Aeronautics and Space Administration, the Lunar Exploration mission Juno II | Pioneer 3 delivered its payload into 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

Mission timeline
- 1958-12-06T05:44:52.000ZJuno II lifts off from Cape Canaveral SFS, FL, USA.
- Juno II passes through max aerodynamic pressure (Max Q).
- Main engine cutoff — the first stage shuts down as planned.
- Stage separation — the first stage separates cleanly.
- Second-stage engine ignites for the next phase of flight.
- Orbit insertion confirmed — the vehicle is now in Lunar flyby.
- Mission success — all objectives completed.