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Symplectic Integrator for Moons and PLanets: This is a combination of two Levison–Duncan-type integrators (Levison & Duncan 1994), one for the planets and one for the moons of one planet.
Symplectic Integrator for Moons and PLanets: This is a combination of two Levison–Duncan-type integrators (Levison & Duncan 1994), one for the planets and one for the moons of one planet.