Category:Explorer 18

**Explorer 18**
	satellite statunitense appartenente al Programma Explorer
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	Wikipedia
Instance of	spacecraft;
Start point	Cape Canaveral Space Launch Complex 17;
Space launch vehicle	Delta C;
UTC date of spacecraft launch	27 November 1963;
Significant event	rocket launch (1963, Cape Canaveral Space Launch Complex 17);
Authority file
	Q1174215;
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Explorer 18, also called IMP-A, IMP-1, Interplanetary Monitoring Platform-1 and S-74, was a NASA satellite launched as part of the Explorer program.