Orbit equations with a set of conservative and a set of non-conserva¬tive perturbing potentials are considered. Scheifele's DS formulation of these equations has dependent, variables similar to Delaunay's orbital elements with the true anomaly as the independent variable. Efficiency curves of computing cost vs. accuracy are constructed for dams integrators of orders 2 through 15 with several correcting algorithms and for a Rung-Kutta integrator. Considering stability regions, choices are made for the optimally efficient integration modes for the DS elements. Integrating in these modes reduces computing costs for a specified accuracy.
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