23343.小行星三軸橢球體形狀以及自轉(zhuǎn)參數(shù)測定——小行星(1028)lydina觀測研究

1、中國科學院研究生院碩士學位論文小行星三軸橢球體形狀以及自轉(zhuǎn)參數(shù)測定小行星（1028）Lydina觀測研究姓名：王夷博申請學位級別：碩士專業(yè)：天體物理指導教師：王曉彬201205AbstractThestudyofasteroidphysicalparametersof!f色rstlleconstraintconditiononthee2urlyenVironmentofsolarsystemasweUasmefonnationaIlde

2、Volutionofplanetarysystem；Inaddition，itcanalsoproVidemerestrictionsontheasteroidcollisionevo一1utiontheo巧Atpresent，menumberofthesampleofasteroidphysicalparametersisunabletomeetthisneedofaboVetwoproblemsTheCCDphotometricob

3、sen，ationisoneof吐1emostimportantmeanstoobtainthephysicalparametersofasteroidTherotationparametersandshapeofasteroidcanbeinferredbyitsli曲tcurVesBasedonthehydrostaticequilibriumtheoryofaspinbody，山erelationamongasteroidmtat

4、ionrate，asteroidshapeandasteroiddensityisestablished，sothedensityofasteroid，beingdifficulttodetemineasabasicphysicalquantity，canbeobtainedTherefore，mephotometricobser、，ationsarecarriedoutin0rdertoeXpandt11enumberoft11esa

5、mpleofasteroidphysicalparameters，whichproVidesthematerialforthefollow—upstudyofasteroid’ra妯ngfuUadVantageoftheequipmentsuperiorityofmediumandsmalltele—scopeoftheYUnnanObserVatory，therotationparametersandshapeofasteroidis

6、obtainedbyusingthephotometricdata，wmchisthemainaimofthismesisInthispaper’SectionlintroducestothesignificanceofasteroidobserVationalstudyandthedeVelopmentalstatusofthisfieldInSection2，af色woffactors，causedthebrightnessvari

7、ationofasteroidisdiscussedSection3introducestot11eHlethodonthedeter—minationofasteroidrotationperiod—PhaseDispersionMinimum(PDM)memodandt11eestimationmethodont11epoleorientationofasteroidandtheaxialratiosoftri—axiale11ip

8、soid—Amplitude—Aspectmethod；Andthepoleo—entationand仃i—axialratiosofasteroid(283)EmmaisobtainedbytheAmplitude—AspectmethodintmssectionTheobser、，ationsprocess，medatareductionandtheestimationresultoftherotationperiodandshap