| Prime contractor | British Aerospace (now MMS) |
| Platform | OTS |
| Mass at launch | 865 kg |
| Mass in orbit | 444 kg |
| Dry mass | 390 kg |
| Dimension | 2.4 x 2.1 x 1.7 m |
| Solar array | 9.3 m span |
| Stabilization | 3-axis |
| DC power |
BOL:
750 W EOL: 555 W |
| Design lifetime | 3 years |
| Phone circuits | 6000 |