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Unmanned Space Experiment Reentry System


Designation 27515 / 02042A
Launch date 10 Sep 2002
Country of origin Japan
Mission Scientific: microgravity
Perigee/Apogee 440/455 km
Inclination 30.4°
Launch vehicle H2A #10

Contains a crystal growth experiment and an automated reentry module that should come back to earth after 8.5 months. First Japanese automatic

Cost: $167 million

End of life

Decay 30 May 2003

External resources


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Technical data


Prime contractor  
Platform SEM
Mass at launch 800 kg
Mass in orbit  
Dimension 1.3 m x 1.5 m
Solar array  
DC power  
Design lifetime 2 years

The reentry vehicle and the propulsion module have a mass of 926 kg.

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