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This Missile Defense Alarm System (MIDAS) Early Warning satellite was launched from Vandenberg AFB aboard an Atlas Agena D rocket.

The MIDAS program, also known as Air Force Program 461, carried out 12 launches between 1960 and 1966 using four different types of increasingly sophisticated infrared sensors. The objective was to develop a satellite that could carry an infrared sensor to detect ICBM launches.

Alternate Names

  • 02403
  • MIDAS11
  • Missile Defense Alarm System 11

Facts in Brief

Launch Date: 1966-08-19
Launch Vehicle: Atlas-Agena D
Launch Site: Vandenberg AFB, United States
Mass: 2000 kg

Funding Agency

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


  • Surveillance and Other Military

Additional Information

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

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