he eccenicities and inclinations of the terresial planets， especially of mercury and mars on a time-scale of several 109 yr (laskar 1996). the results of laskar's secular perturbation theory should be confirmed and investigated by fully numerical integrations.
in this paper we present preliminary results of six long-term numerical integrations on all nine planetary orbits， covering a span of several 109 yr， and of two other integrations covering a span of ± 5 x 1010 yr. the total elapsed time for all integrations is more than 5 yr， using several dedicated pcs and workstations. one of the fundamental conclusions of our long-term integrations is t
对火星轨道变化问题的最后解释(10/49)