STP-R1
| Launched | 22 September 2005 |
| Flight ended | 27 June 2006 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 28871 |
| COSPAR ID | 2005-037A |
| Alternative names |
USA 185 |
| Observing |