| Name of Satellite, Alternate Names | FLTSATCOM-8 (USA 46) |
| Country of Operator/Owner | USA |
| Operator/Owner | US Navy |
| Users | Military |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | -14.74 |
| Perigee (km) | 35745 |
| Apogee (km) | 35829 |
| Eccentricity | 0.000996275826078706 |
| Inclination (degrees) | 8.97 |
| Period (minutes) | 1436.13 |
| Launch Mass (kg.) | 2310 |
| Dry Mass (kg.) | 1884 |
| Power (watts) | |
| Date of Launch | 25-09-1989 |
| Expected Lifetime | 5 yrs. |
| Contractor | TRW, Defense and Space Systems Group |
| Country of Contractor | USA |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Atlas Centaur |
| COSPAR Number | 1989-077A |
| NORAD Number | 20253 |
| Comments | Old system replaced by UFO satellites; this satellite still operational as of 2009. |