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USA 254



A series of space surveillance satellites developed covertly by the Air Force and Orbital Sciences to provide a space-based capability operating in the near-geosynchronous orbit regime supporting U.S. Strategic Command space surveillance operations as a dedicated Space Surveillance Network (SSN) sensor.

According to USAF officials, the GSSAP satellites will drift above and below the GEO belt, using electro-optical sensors to collect information on satellites and other objects in that region. The satellites are maneuverable, allowing them to collect intelligence on specific target satellites. GSSAP provides “accurate tracking and characterization” of satellites.

Alternate Names

  • 40100
  • USA254

Facts in Brief

Launch Date: 2014-07-28
Launch Vehicle: Delta IV
Launch Site: Cape Canaveral, United States

Funding Agency

  • United States Air Force Academy (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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