Thor Delta C
SuccessExplorer 21 · United States Air Force
Launch time (NET)
Sunday, Oct 4, 1964, 03:45 UTC
Launch window
Sunday, Oct 4, 1964, 03:45 UTC – Sunday, Oct 4, 1964, 03:45 UTC
Provider
United States Air Force
Rocket
Launch pad
Space Launch Complex 17A, Cape Canaveral SFS, FL, USA · Open map
Status
Success
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Mission
Explorer 21
Type
Astrophysics
Orbit
Elliptical Orbit (Elliptical)
Explorer 21 (IMP 2) was a solar-cell and chemical-battery powered spacecraft instrumented for interplanetary and distant magnetospheric studies of energetic particles, cosmic rays, magnetic fields, and plasmas.
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