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OV1-19 was one of four research satellites injected into orbit simultaneously from a single launch vehicle. The spacecraft was an 81-cm-long cylinder measuring 69 cm in diameter, and was fitted with hemispheric multifaced solar panel domes on either end. The spin-stabilized spacecraft had two major objectives: (1) to make a detailed study of events causing and sustaining trapped radiation in the Van Allen belts, and (2) to study the hazards to man of incoming and trapped radiation. The spacecraft performed normally from launch until early 1970, when serious problems developed in its telemetry system. The amount of useful data continually declined during this period, and the spacecraft was deactivated in March 1970.

Alternate Names

  • 03825

Facts in Brief

Launch Date: 1969-03-18
Launch Vehicle: Atlas
Launch Site: Vandenberg AFB, United States
Mass: 425 kg

Funding Agency

  • Department of Defense-Department of the Air Force (United States)


  • Space Physics
  • Astronomy

Additional Information

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



NameRoleOriginal AffiliationE-mail
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