| Name of Satellite, Alternate Names | SB-WASS 3-3 (Space Based Wide Area Surveillance System) (NOSS 3-3, USA 181, NRO L23) |
| Country of Operator/Owner | USA |
| Operator/Owner | National Reconnaissance Office/US Navy |
| Users | Military |
| Purpose | Electronic Surveillance/Ocean |
| Class of Orbit | LEO |
| Type of Orbit | Intermediate |
| Longitude of GEO (degrees) | 0 |
| Perigee (km) | 1016 |
| Apogee (km) | 1203 |
| Eccentricity | 0.0125008356173541 |
| Inclination (degrees) | 63.4 |
| Period (minutes) | 107.4 |
| Launch Mass (kg.) | 5,000+ |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 03-02-2005 |
| Expected Lifetime | |
| Contractor | Lockheed Martin |
| Country of Contractor | USA |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Atlas 3B |
| COSPAR Number | 2005-004B |
| NORAD Number | 28541 |
| Comments | ELINT system; wide area ocean surveillance, primarily for the Navy. |