| Name of Satellite, Alternate Names | SDS III-6 (Satellite Data System) NRO L-27, Gryphon, USA 227) |
| Country of Operator/Owner | USA |
| Operator/Owner | National Reconnaissance Office (NRO)/US Air Force |
| Users | Military |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | -30.4 |
| Perigee (km) | 35770 |
| Apogee (km) | 35803 |
| Eccentricity | 0.000391398716686632 |
| Inclination (degrees) | 4.92 |
| Period (minutes) | 14.36 |
| Launch Mass (kg.) | |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 02-03-2011 |
| Expected Lifetime | |
| Contractor | National Reconnaissance Laboratory |
| Country of Contractor | USA |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Delta 4 |
| COSPAR Number | 2011-011A |
| NORAD Number | 37377 |
| Comments | Real-time data relay from reconnaissance satellites. |