| Name of Satellite, Alternate Names | NATO 4-B (USA 98) |
| Country of Operator/Owner | United Kingdom |
| Operator/Owner | Ministry of Defense/Paradigm Secure Communications (wholly owned by EADS Astrium) |
| Users | Military |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | -35.05 |
| Perigee (km) | 35775 |
| Apogee (km) | 35795 |
| Eccentricity | 0.000237219784129996 |
| Inclination (degrees) | 7.33 |
| Period (minutes) | 1436.04 |
| Launch Mass (kg.) | 1430 |
| Dry Mass (kg.) | 660 |
| Power (watts) | 1200 |
| Date of Launch | 08-12-1993 |
| Expected Lifetime | 7 yrs. |
| Contractor | Matra Marconi |
| Country of Contractor | France |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Delta 2 |
| COSPAR Number | 1993-076A |
| NORAD Number | 22921 |
| Comments | Turned over to British MOD for communications in 2011. Encrypted; X-band, UHF, C-band; NATO and British Ministry of Defence; secure military and diplomatic voice and data communications. |