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Country of Origin
Designation Numbers
First in History
Footprint Maps
Glossary
Launch Vehicles
Satellites Missions
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Launch Schedule
The Clarke Belt
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Satellite Fact Sheet
Explorer 18
Interplanetary Monitoring Probe
, also called IMP 01
General
Designation
00693 / 63046A
Launch date
27 Nov 1963
Country of origin
United States
Mission
Scientific:
magnetosphere study
Perigee/Apogee
192/197616 km
Inclination
33.3°
Period
5666.2 min
Launch vehicle
Thor Delta #21
End of life
Decay
30 Dec 1965
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