How this calculator works
Enter primary radius (km), primary density (kg/m³), satellite density (kg/m³), satellite orbit radius (km). CalcStack applies the displayed formula and reports each intermediate planning value with the units shown.
Formula / method
Fluid Roche limit = 2.44R(primary) × (ρprimary ÷ ρsatellite)^(1/3)
Worked example
Use the documented default inputs to model roche limit.
Assumptions and limitations
Inputs represent stable average operating conditions and the displayed equation applies.
This is a planning model; real systems and measurements can require domain-specific corrections.