|Mission type||Lunar orbiter|
|Mission duration||Failed to launch|
|Manufacturer||TRW Space Technology Laboratories|
|Launch mass||168 kg (370 lb)|
|Start of mission|
|Launch date||24 September 1959(pre-launch failure)|
|Rocket||Atlas C-Able #9C|
|Launch site||Cape Canaveral, LC-12|
Pioneer P-1 was a failed mission in the Pioneer program. The spacecraft was a 1-meter diameter sphere with a propulsion module, and was to carry a TV camera and magnetic field sensor. It was to be spin-stabilized and was known as a 'paddlewheel' spacecraft.
The spacecraft was intended for launch on an Atlas C-Able rocket, but this vehicle was destroyed on 24 September 1959 in an explosion on its launch pad during a pre-launch static firing. The P-1 spacecraft and an Able IV space engine were not present on the launch vehicle when it exploded, and were later used on the Pioneer P-3 mission.