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Discoverer 35



Discoverer 35 (1961 Alpha Zeta) program objectives were to evaluate refinements in design changes to prior spacecraft. The spacecraft was also one of a series used by the USAF for low resolution photo surveillance. Special measuring devices were on board to telemeter voltages, pressures, and other performance factors in addition to normal telemetry equipment. The reentry capsule was ejected after 18 orbits and was recovered in mid-air by a C-130 aircraft at 13,000 ft.

Alternate Names

  • 1961 Alpha Zeta 1
  • KH-3 9028
  • 00201
  • Discoverer35

Facts in Brief

Launch Date: 1961-11-15
Launch Vehicle: Thor
Launch Site: Vandenberg AFB, United States
Mass: 1150 kg

Funding Agency

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


  • Surveillance and Other Military
  • Astronomy
  • Earth Science

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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