| Prime contractor | Hughes |
| Platform | HS-376W |
| Mass at launch | 1760 kg |
| Mass in orbit | 1052 kg |
| Dry mass | 850 kg |
| Diameter | 3.64 m |
| Height | 3.43 m (8.38 m deployed) |
| Stabilization | spin stabilized |
| DC power | BOL: 1650 W |
| Design lifetime | 12 years |
| Apogee motor | Thiokol Star 30 (solid fuel) |