| Prime contractor | Britsh Aerospace (now MMS) |
| Platform | ECS |
| Mass at launch | 1430 kg |
| Mass in orbit | 770 kg |
| Dry mass | 730 kg? |
| Payload mass | 215 kg |
| Length | 2.2 m |
| Height | 2.3 m |
| Solar array | 16 m span |
| Stabilization | 3-axis |
| DC power | EOL: 1200 W |
| Design lifetime | 7 years |