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Miranda, also known as United Kingdom - X4 (UK-X4) satellite, was a spin-stabilized experimental spacecraft. It was designed to serve as an engineering test bed to check the application of a three-axis integrating gyro system for attitude control and a three-axis rate gyro system for rate control. The satellite was in the form of a box 83.5 cm high, with a square base 66.5 cm on a side. Electrical power to the spacecraft was supplied from batteries and solar panels. When fully deployed the panels measured 250 cm in length. The payload package consisted of: (1) a three-axis propane gas jet system for orbital positioning; (2) a Canopus star sensor to determine reflectivity and interference generated from the propane gas system; (3) an Earth albedo sensor; (4) (radiation) test cells to measure degradation in orbit; and, (5) four infrared detectors to provide eclipse warning for experiment number two.

Alternate Names

  • 07213

Facts in Brief

Launch Date: 1974-03-09
Launch Vehicle: Scout
Launch Site: Vandenberg AFB, United States
Mass: 92 kg

Funding Agencies

  • Ministry of Aviation Supply, UK (United Kingdom)
  • Department of Trade and Industry, UK (United Kingdom)
  • National Aeronautics and Space Administration (United States)


  • Engineering

Additional Information

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



NameRoleOriginal AffiliationE-mail
Mr. Joseph B. TalbotProject ManagerNASA Langley Research Center
Mr. R. StaniforthProject ManagerHawker Siddeley Dynamics LTD
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