Category:Pioneer P-31

**Pioneer P-31**
	failed lunar orbiter probe
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Instance of	space probe;
Part of	Pioneer program;
Operator	National Aeronautics and Space Administration;
Start point	Cape Canaveral Launch Complex 12;
Manufacturer	TRW Inc.;
Space launch vehicle	Atlas-Able;
UTC date of spacecraft launch	15 December 1960;
Significant event	rocket launch (1960, Cape Canaveral Launch Complex 12);
Mass	175 kg (takeoff);
Cause of destruction	launch failure;
Follows	Pioneer P-30;
Followed by	Pioneer 6;
Authority file
	Q1187438;
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