Manifest / 01Go
Chang'e 7
Long March 5
ProviderChina Aerospace Science and Technology Corporation
Pad101
DateAug 25, 2026
PrecisionAbout 12:30 AM UTC
Schedule watchTracking updates
T– about 1d 12hWindow opens 12:24 AM UTC
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Success
Explorer 20
Scout X-4National Aeronautics and Space AdministrationSpace Launch Complex 5
Tuesday, August 25, 1964 · 01:43 PM UTC
This mission is complete.
Mission Brief
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.
PayloadExplorer 20
OrbitLow Earth Orbit
CustomerNational Aeronautics and Space Administration
StagesUnknown
PadSpace Launch Complex 5, Vandenberg SFB, CA, USA
Mission Timeline
14 / 14100%Ground vector
Launch site
Site locked
Space Launch Complex 5
Vandenberg SFB, CA, USA
Global range
- Latitude
- 34.608°N
- Longitude
- 120.625°W
Range Weather
Launch commit criteria
Clear
Watch
TrackingNo active constraints
Weather Rules
Tracking no weather issues at this time.
- Primary concern
- No weather issues
- Rule count
- 0
- Temperature
- Not reported
- Surface wind
- Not reported
Window
01:43 PM UTC - 01:43 PM UTC
Provider
National Aeronautics and Space Administration
Profile →USA • Founded 1958
The National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and...
Schedule History
No meaningful launch-time or status changes recorded.
