Block 2010 Spacecraft Risk Reduction
|Mission type||U.S. military technology demonstration|
|Operator||Missile Defense Agency / U.S. Air Force|
|Start of mission|
|Launch date||5 May 2009, 20:24:25 UTC|
|Rocket||Delta II 7920-10C|
|Launch site||Vandenberg, SLC-2W|
|Contractor||United Launch Alliance|
|Reference system||Geocentric orbit|
USA-205, also known as Space Tracking and Surveillance System-Advanced Technology Risk Reduction (STSS-ATRR), 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 (MDEWS). The technology demonstrated on STSS-ATRR was used in the development of the Space Tracking and Surveillance System (STSS) part of the Space-Based Infrared System (SBIRS).
It was launched on a Delta II 7920-10C launch vehicle from Space Launch Complex 2W (SLC-2W) at the Vandenberg Air Force Base (VAFB) in California, at 20:24:25 UTC on 5 May 2009 into a Sun-synchronous orbit (SSO). The launch was conducted by United Launch Alliance.
Operational and administrative control of the Space Tracking and Surveillance System-Advanced Technology Risk Reduction (STSS-ATRR) satellite was transferred to Air Force Space Command (AFSPC), 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.
- Krebs, Gunter. "STSS-ATRR". Retrieved 18 April 2009.
- "STSS Risk Reduction Flight Eyes Launch". Aviation Week & Space Technology. 28 April 2009.
- "United Launch Alliance Mission Overview".
- "Missile Defense Agency Space Tracking and Surveillance System Advanced Technology Risk Reduction Satellite transfers to Air Force Space Command". Missile Defense Agency. 26 February 2011. Archived from the original on 2 December 2011. Retrieved 26 December 2020. This article incorporates text from this source, which is in the public domain.