简介：At12:07UT(8:07pmChinaStandardTime)on2017Oct4,abrightbolidewaswidelyobservedintheShangri-LaregionoftheProvinceofYunnan,China(Figure1).TheeventwaswellobservedbythegeneralpublicasittookplaceonthenightoftheMidAutumnFestival,whichisassociatedwithmoongazing.SonicboomsandgroundshakingwerereportedinanareaofaboutathousandsquarekilometersnorthwestofShangri-LaCity.DatafromU.S.governmentsensorssuggeststhattheimpactenergyoftheeventwasapproximately0.54ktTNTequivalent,withtheterminusofthebolidepositionedat28.1°N,99.4°E.ThisisthelargestobservedbolideeventoverlandsincethebolideeventthattookplaceinMauritaniaon2016Jun27(1.2kt).
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