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The magnetically aligned 1963-038C spacecraft was designed to measure energetic charged particles, magnetic fields, and the solar spectrum, and to acquire geodetic data. After August 1969, the satellite, which attained a nearly circular polar orbit, sampled its environment only infrequently. The last data were transmitted during November 1974. The mission was highly successful.

Alternate Names

  • 5E 1
  • Transit 5E1
  • SN 39
  • 00671

Facts in Brief

Launch Date: 1963-09-28
Launch Vehicle: Thor
Launch Site: Vandenberg AFB, United States
Mass: 59 kg

Funding Agency

  • Department of Defense-Department of the Navy (United States)


  • Space Physics

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Mr. John DassoulasProject ManagerApplied Physics
Dr. Carl O. BostromProject ScientistApplied Physics Laboratory
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