August 25, 1964 1:43 pm
Explorer 20
|
Scout X-4
Vandenberg SFB, CA, USA
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Hours
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Last Updated:
2026-07-13 21:11:38
Explorer 20 (IE A, Ionospheric Explorer A, TOPSI, Top Side Explorer or S 48) was designed to measure electron distribution, ion density and temperature, and to estimate cosmic noise levels between 2 and 7 MHz.
Launch Overview
Window Open
13:43 UTC
Window Close
13:43 UTC
Lift Off
Aug 25, 1964 · 13:43 UTC
Launch Facility
Vandenberg SFB, CA, USA
Launch Pad
Space Launch Complex 5
Target Orbit
Low Earth Orbit
Payload Overview
Customer
National Aeronautics and Space Administration
Payload
Explorer 20
Rocket
Scout X-4
Destination
Low Earth Orbit
Recovery Overview
Landing Location
See Mission Notes
Landing Type
RTLS / Droneship
Explorer 20 (IE A, Ionospheric Explorer A, TOPSI, Top Side Explorer or S 48) was designed to measure electron distribution, ion density and temperature, and to estimate cosmic noise levels between 2 and 7 MHz.
Height
LEO Payload
Total Launches
Status
National Aeronautics and Space Administration
Space Launch Complex 5
Launch Overview
Window Open
13:43 UTC
Window Close
13:43 UTC
Lift Off
Aug 25, 1964 · 13:43 UTC
Launch Facility
Vandenberg SFB, CA, USA
Launch Pad
Space Launch Complex 5
Target Orbit
Low Earth Orbit
Payload Overview
Customer
National Aeronautics and Space Administration
Payload
Explorer 20
Rocket
Scout X-4
Destination
Low Earth Orbit
Recovery Overview
Landing Location
See Mission Notes
Landing Type
RTLS / Droneship
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