EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM

《EVIDENCE FOR A DISTANT GIANT PLANET IN THE SOLAR SYSTEM》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、TheAstronomicalJournal,151:22(12pp),2016Februarydoi:10.3847/0004-6256/151/2/22©2016.TheAmericanAstronomicalSociety.Allrightsreserved.EVIDENCEFORADISTANTGIANTPLANETINTHESOLARSYSTEMKonstantinBatyginandMichaelE.BrownDivisionofGeologicalandPlanetarySciences,Califo

2、rniaInstituteofTechnology,Pasadena,CA91125,USA;kbatygin@gps.caltech.eduReceived2015November13;accepted2016January10;published2016January20ABSTRACTRecentanalyseshaveshownthatdistantorbitswithinthescattereddiskpopulationoftheKuiperBeltexhibitanunexpectedclusteri

3、ngintheirrespectiveargumentsofperihelion.Whileseveralhypotheseshavebeenputforwardtoexplainthisalignment,todate,atheoreticalmodelthatcansuccessfullyaccountfortheobservationsremainselusive.InthisworkweshowthattheorbitsofdistantKuiperBeltobjects(KBOs)clusternoton

4、lyinargumentofperihelion,butalsoinphysicalspace.Wedemonstratethattheperihelionpositionsandorbitalplanesoftheobjectsaretightlyconfinedandthatsuchaclusteringhasonlyaprobabilityof0.007%tobeduetochance,thusrequiringadynamicalorigin.Wefindthattheobservedorbitalalignm

5、entcanbemaintainedbyadistanteccentricplanetwithmass10m⊕whoseorbitliesinapproximatelythesameplaneasthoseofthedistantKBOs,butwhoseperihelionis180°awayfromtheperiheliaoftheminorbodies.Inadditiontoaccountingfortheobservedorbitalalignment,theexistenceofsuchaplanet

6、naturallyexplainsthepresenceofhigh-perihelionSedna-likeobjects,aswellastheknowncollectionofhighsemimajoraxisobjectswithinclinationsbetween60°and150°whoseoriginwaspreviouslyunclear.Continuedanalysisofbothdistantandhighlyinclinedoutersolarsystemobjectsprovidesth

7、eopportunityfortestingourhypothesisaswellasfurtherconstrainingtheorbitalelementsandmassofthedistantplanet.Keywords:KuiperBelt:general–planetsandsatellites:dynamicalevolutionandstability1.INTRODUCTIONratiooftheobjecttoperturbersemimajoraxistobenearlyunity.Thism

8、eansthattrappingallofthedistantobjectswithinTherecentdiscoveryof2012VP113,aSedna-likebodyandtheknownrangeofsemimajoraxesintoKozairesonancesapotentialadditionalmemberoftheinnerOortc