USA-205
USA-205, also known as Space Tracking and Surveillance System-Advanced Technology Risk Reduction, and previously as Block 2010 Spacecraft Risk Reduction is a satellite formerly operated by the United States Missile Defense Agency. It was launched to demonstrate new technology for missile detection early warning systems. The technology demonstrated on STSS-ATRR will be used in the development of the Space Tracking and Surveillance System part of the Space-Based Infrared System.
It was launched on a Delta II 7920-10C rocket from Space Launch Complex 2W at the Vandenberg Air Force Base in California, USA at 20:24:25 UTC on 5 May 2009 into a sun-synchronous orbit. The launch was conducted by United Launch Alliance.
Operational and administrative control of the Space Tracking and Surveillance System-Advanced Technology Risk Reduction satellite was transferred to Air Force Space Command effective 31 January 2011. In addition to successfully demonstrating required on orbit system performance parameters for a prototype sensor technology, STSS-ATRR conducted Space Situational Awareness and related operations on an as-capable basis.
