Usa-205
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).
 Launch of a Delta II rocket carrying an experimental satellite (STSS-ATRR) for the Missile Defense Agency. | |
| Names | STSS-ATRR Block 2010 Spacecraft Risk Reduction |
|---|---|
| Mission type | U.S. military technology demonstration |
| Operator | Missile Defense Agency / U.S. Air Force |
| COSPAR ID | 2009-023A |
| SATCAT no. | 34903 |
| Start of mission | |
| Launch date | 5 May 2009, 20:24:25 UTC |
| Rocket | Delta II 7920-10C (Delta D341) |
| Launch site | Vandenberg, SLC-2W |
| Contractor | United Launch Alliance |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Sun-synchronous orbit |
| Inclination | 97.8° |
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.
References
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