| Name of Satellite, Alternate Names | MUOS-1 (Mobile User Objective System 1) |
| Country of Operator/Owner | USA |
| Operator/Owner | DoD/US Navy |
| Users | Military |
| Purpose | Communications |
| Class of Orbit | GEO |
| Type of Orbit | |
| Longitude of GEO (degrees) | |
| Perigee (km) | 35800 |
| Apogee (km) | 35800 |
| Eccentricity | 0 |
| Inclination (degrees) | |
| Period (minutes) | 1436.1 |
| Launch Mass (kg.) | 6804 |
| Dry Mass (kg.) | |
| Power (watts) | |
| Date of Launch | 24-02-2012 |
| Expected Lifetime | 10-12 yrs. |
| Contractor | Lockheed Martin Missiles and Space |
| Country of Contractor | USA |
| Launch Site | Cape Canaveral |
| Launch Vehicle | Atlas 5 |
| COSPAR Number | 2012-009A |
| NORAD Number | 38093 |
| Comments | Four primary satellites and one orbiting spare will comprise the MUOS system as it is fielded over the next few years to augment and then replace the Navy´s aging Ultra High Frequency spacecraft constellation. Orbital parameters estimated. |