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HomeLaunch HistoryRocket EncyclopediaFuture LaunchesStatistics & ChartsDashboard

21 June 1969, 08:47 UTC

IMP G

Thor Delta E1Vandenberg SFB, CA, USA
Drawing of the Thor Delta E1 for IMP G

Explorer 41 (IMP-G / IMP-5), a NASA Interplanetary Monitoring Platform measuring magnetospheric particles, fields, and solar wind in a highly elliptical orbit. Thor-Delta E1 from Vandenberg SLC-2W lofted it on 21 June 1969; operated until reentry in December 1972.

Outcome
Partial
Orbit
Elliptical
Elliptical orbit
Payload to orbit
79 kg
Flight
16th
of 17 Thor Delta E1 flights
Date and time
21 June 1969, 08:47 UTC
Builder
McDonnell Douglas
Launch site
Space Launch Complex 2W, Vandenberg SFB, CA, USA
Payload
Astrophysics
International designator
1969-053
Launches in 1969
61st of 125

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