STSS ATRR
| Launched | 4 May 2009 |
| Flight ended | – |
| Status | Operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 34903 |
| COSPAR ID | 2009-023A |
| Alternative names |
USA 205 |
| Observing |
Launched alongside
DELTA 2 R/B