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Explorer 33 (AIMP-D)

Explorer 33 (AIMP-D) was the first NASA Anchored Interplanetary Monitoring Platform, launched to study magnetic fields, plasma, and energetic particles at lunar distances. Lunar-orbit insertion was not achieved because of excess injection velocity; the spacecraft instead entered a highly elliptical Earth orbit and achieved the mission scientific objectives.

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Identity

Aliases
Explorer XXXIIIExplorer 33Anchored Interplanetary Monitoring Platform DAIMP-DAIMP IIMP-D1966-058A
Name
Explorer 33 (AIMP-D)
Status
completed

Details

Astronauts
-
Description
Explorer 33 (AIMP-D) was the first NASA Anchored Interplanetary Monitoring Platform, launched to study magnetic fields, plasma, and energetic particles at lunar distances. Lunar-orbit insertion was not achieved because of excess injection velocity; the spacecraft instead entered a highly elliptical Earth orbit and achieved the mission scientific objectives.
Destination
Highly elliptical geocentric Earth orbit, initially about 100,000 km perigee and 500,000 km apogee (18.5-day period), after lunar orbit was not attained
Programs
Start Date
1966-07-01
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Creation Time
August 14, 2026 at 20:31:09 UTC
Updated Time
August 21, 2026 at 11:38:44 UTC

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