| Prime contractor | Mitsubishi Electric Co. with NEC (transponders) |
| Platform | Mitsubishi |
| Mass at launch | 1099 kg |
| Mass in orbit | 550 kg |
| Diameter | 2.184 m |
| Height | 2.429 m |
| Stabilization | Spin stabilized |
| DC power | 833 to 750 W (depending on the season) |
| Design lifetime | 7 years |