Before launching satellites, post-disposal risks*1 should be evaluated, to support making space activities safe.
(*1: the risks such as the possibility that debris from a re-entering satellite will fall to the ground)

How should we deal with satellites or rockets after use?

Satellites and rockets in low Earth orbit that have completed their mission will eventually fall into the atmosphere and most of their parts will be demised. However, some of the debris from the parts withstanding the heat of the engine may remain unburned and fall to the ground. To minimize the risk of falling objects from re-entering satellites, international organizations and space agencies request that risk assessments should be conducted before launch and countermeasures should be taken against high-risk objects. Ensuring that the satellites and other objects to be disposed of are sufficiently safe is an extremely important issue that is fundamental to sustainable space activities.

ORSAT-J can evaluate the risk of re-entering objects at an international level!

JAXA develops the Object Re-entry Survival Analysis Tool - Japan (ORSAT-J), which is a tool to assess the survivability and risk to the ground of re-entering objects. ORSAT-J is derived from NASA’s ORSAT and has capabilities of trajectory analysis, heating analysis, and calculation of the expected casualties per re-entry. ORSAT-J can perform analysis at the same level as tools of other space agencies (NASA, CNES, etc.).
ORSAT-J is free of charge for lent to any business operator in Japan (universities, private companies, national institutions, etc.) who develops spacecrafts or rockets that remain in orbit and requires to apply for the Act on Launching of Spacecraft, etc. and Control of Spacecraft. (Please note that participation in training is required to become proficient with ORSAT-J, so as a guideline, we ask that ORSAT-J be used by those who need to evaluate spacecraft weighing 100 kg or more.)

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  We have developed an infrastructure-like tool that can create re-entry survivability analysis reports required to apply for the Space Activities Act using only a standard PC.
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  We are working toward safe space utilization by incorporating re-entry survivability evaluations into satellite design.
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  Any business operator in Japan who wants to enter the space industry can perform re-entry survivability analysis at the same international level as JAXA, regardless of differences in experience or knowledge.