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STEP 2 (Space Test Experiment Platform 2) was a US Air Force satellite that met the need for a standardized space platform specifically tailored to host Space Test Program experiments. These advanced research and development experiments were generally small, relatively fast-turnaround, and best suited to modestly sized vehicles. While STEP was capable of carrying multiple experiments, this mission carried just one. The experiment, in keeping with Space Test Program objectives to deinge the military role in space research, evaluated a number of specific signal detection and modulation methods.

STEP 2 did not achieve the planned orbit though it still provided useful data.

Alternate Names

  • 23105
  • STEP2
  • Space Test Exp Platform 2

Facts in Brief

Launch Date: 1994-05-19
Launch Vehicle: Pegasus
Launch Site: Edwards Air Force Base, United States
Mass: 180 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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