Spacecraft data:
| Prime contractor | Mitsubishi Electric (USEF?) |
| Platform | |
| Operator | METI, NEDO, USEF (Institute for Unmanned Space Experiment Free Flyer) |
| Mass at launch | 980 kg (740 kg?) |
| Dry Mass | kg |
| Basic shape | Box + 2 panels |
| Dimension (m) | 10.2 long, 2.5 high |
| Solar array | |
| Stabilization | |
| DC power | |
| Design lifetime | 1 yrs |
|
Decay:
| Out of service: | Dec 2011 |
| Cause: | |
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