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Abstract-The Spacecraft Plasma interaction Software (SPIS) has been improved to allow for the simulation of lunar and asteroid dust emission, transport, deposition and interaction with a spacecraft on or close to the lunar surface. The physics of dust charging and of the forces that they are subject to has been carefully implemented in the code. It is both a tool to address the risks faced by lunar probes on the surface, and a tool to study the dust transport physics. We hereby present the details of the physics that has been implemented in the code, as well as the interface improvements that allow for a user friendly insertion of the lunar topology and of the lander in the simulation domain. A realistic case is presented that highlights the capabilities of the code as well as some general results about the interaction between a probe and a dusty environment.

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