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SP-4012 NASA HISTORICAL DATA BOOK: VOLUME III

PROGRAMS AND PROJECTS 1969-1978

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Explorer Mission	Launch Date	Class
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41/IMP-G	June 21, 1969	Interplanetary monitoring platform (IMP)
42/Uhuru/SAS-A	Dec. 12, 1970	X-ray astronomy
43/IMP-I	Mar. 13, 1971	IMP
44/Solrad 10	July 8, 1971	Solar physics
45	Nov. 15, 1971	Magnetospheric
46	July 13, 1972	Meteoroid technology
47/IMP-H	Sept. 22, 1972	IMP
48/SAS-B	Nov. 16, 1972	Gamma ray astronomy
49/RAE-B	June 10, 1973	Radio astronomy
50/IMP-J	Oct. 25, 1973	IMP
51	Dec. 15, 1973	Atmospheric
52/Hawkeye 1/Injun F	June 3, 1974	Magnetospheric
53/SAS-C	May 7, 1975	X-ray astronomy
54	Oct. 6, 1975	Atmospheric
55	Nov. 20, 1975	Atmospheric