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Explorer 35: Lunar Orbit

Mission Details

Mission Name: Explorer 35
Mission Type: Lunar Orbiter
Operator: NASA (National Aeronautics and Space Administration)
Launching State: United States
Location: Unknown
Latitude: N/A
Longitude: N/A
Launch Date: 19 July 1967, 14:19:02 UT
Landing Date: Deactivated 24 June 1973
Objects on or Related to Site:
Explorer 35 (AIMP-E)
Image Source: NASA


Explorer 35, also known as the Anchored Interplanetary Monitoring Platform (AIMP-E or AIMP-6) was designed to study interplanetary space phenomena, particularly the solar wind, the interplanetary magnetic field, dust distribution near the Moon, the lunar gravitational field, the weak lunar ionosphere, and the radiation environment.

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Heritage Consideration

The spacecraft found that the Moon has no magnetosphere, that solar wind particles impact directly onto the surface, and the the Moon creates a “cavity” in the solar wind stream.

Object on or Related to Site

Object Name: Explorer 35 (AIMP-E)
Cospar: 1967-070A
Norad: N/A
Location: Precise location unknown or undisclosed.
Launch Date: 19 July 1967, 14:19:02 UT
Landing Date: Deactivated 24 June 1973
Deployment: N/A
End Date: 24 June 1973
Function: Study of interplanetary phenomenon.
Image Source: NASA


Explorer 35, the Anchored Interplanetary Monitoring Platform, was a spin-stabilized spacecraft instrumented for interplanetary studies, at lunar distances, of the interplanetary plasma, magnetic field, energetic particles, and solar X rays. It was launched into an elliptical lunar orbit. After successful operation for 6 years, the spacecraft was turned off on June 24, 1973. It later impacted the lunar surface, however, its precise location is unknown.

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