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第76章 对火星轨道变化问题的最后解释(4/12)

esultsofsixlong-termnumericalintegrationsonallninelaaryorbits,coveringasanofseveral109yr,andoftootherintegrationscoveringasanof±51010yr.hetotalelasedtimeforallintegrationsismorethan5yr,usingseveraldedicatedsandorkstations.neofthefundamentalconclusionsofourlong-termintegrationsisthatolarsystemlaarymotionseemstobestableintermsoftheillstabilitymentionedabove,atleastoveratime-sanof±4yr.ctually,inournumericalintegrationsthesystemasfarmorestablethanhatisdefinedbytheillstabilitycriterion:notonlydidnocloseencounterhaenduringtheintegrationeriod,butalsoallthelaaryorbitalelementshavebeenconfinedinanarroregionbothintimeandfrequencydomain,thoughlaarymotionsarestochastic.incetheuroseofthisaeristoexhibitandovervietheresultsofourlong-termnumericalintegrations,eshotyicalexamlefiguresasevidenceoftheverylong-termstabilityofolarsystemlaarymotion.orreadershohavemoresecificanddeeerinterestsinournumericalresults,ehaverearedaebage(aess),hereeshoraorbitalelements,theirlo-assfilteredresults,variationofelaunayelementsandangularmomentumdeficit,andresultsofoursimletime–frequencyanalysisonallofourintegrations.

nection2ebrieflyexlainourdynamicalmodel,numericalmethodandinitialconditionsusedinourintegrations.ection3isdevotedtoadescritionofthequickresultsofthenumericalintegrations.erylong-termstabilityofolarsystemlaarymotionisaarentbothinlaaryositionsandorbitalelements.roughestimationofnumericalerrorsisalsogiven.ection4goesontoadiscussionofthelongest-termvariationoflaaryorbitsusingalo-assfilterandincludesadiscussionofangularmomentumdeficit.nection5,eresentasetofnumericalintegrationsfortheouterfive
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