off error handling and numerical algorithms. in the upper panel of fig. 1， we can recognize this situation in the secular numerical error in the total angular momentum， which should be rigorously preserved up to machine-e precision.
2.4.2 error in planetary longitudes
since the symplectic maps preserve total energy and total angular momentum of n-body dynamical systems inherently well， the degree of their preservation may not be a good measure of the accuracy of numerical integrations， especially as a measure of the positional error of planets， i.e. the error in planetary longitudes. to estimate the numerical error in the planetary longit
对火星轨道变化问题的最后解释(19/49)