CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 1992, Vol. 9 ›› Issue (S2): 810-811.

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THE PROBLEM OF NUMERICAL STABILIZATION AND STEP-SIZE UNIFORMIZATION IN THE NUMERICAL SOLUTION OF CELESTIAL MOVIGN EQUATION

Liu Lin, Liao Xinhao   

  1. Department of Astroscope, Nanjing University, 210008
  • Received:1992-05-18 Online:1992-12-31 Published:1992-12-31

Abstract: The accuracy of orbital seminajor axis is improved by the energy relation so that the growth of the along-track error in traditional integrators can be controlled. This is called numerical stabilization. The change of step-size can be solved by the transformation of time variable: df=r3/2ds.