Home > Legacy archive > User’s manual > Parameters > RocheSmoothing
When this parameter is defined to a non-zero value 
, the smoothing length for the evaluation over the mesh of the potential arising from each planet is 
, where 
is the Hill sphere radius of the planet, defined by:
where 
and 
are respectively the mass of the planet and the mass
of the central object, and where 
is the planet's semi-major axis.
This same Hill radius fraction applies to all planets simultaneously. The use of this parameter is mutually exclusive with the use of ThicknessSmoothing.
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