文档介绍：1FundamentalsofAstrodynamicsandApplicationsChangeSummaryApril19,2000May27,2004(pdfversion)byDavidValladoThesechangesetsareanon-,orinthetext.******@******@.Iusethefollowingnotationsforeachchange:Correction-NewInformation-Clarification-oftheconceptWording-Improvestructure,fixfonts,-,theunderlineisn’-’vemadesomechangesthroughoutthetextandhaven’,andtheJ2000epoch,,3,:Clarification/CorrectionFigure1--entricity,,F,istheradiusofperiapsis,,thelengthfromeachfocuschanges,-matically(PrussingandConway,1993,62),foranypointontheconicsection,rF′+constant2rF==a(1-2)rF–rF′==constant2cpg12:ClarificationFigure1-,F,,ra,andperiapsis,rp,,a,andthesemiminoraxis,b,,andthesemi-parameter,p,,ye,tothecor-respondingpartofacircle,yc,withthesemi-majoraxis,,yc,andtheverticaldistancefo