A meteoroid entered into Earth's atmosphere near Songyuan,Jilin Province,on November 11,2019 Beijing time.Firstly,observation data is analyzed including data at NASA CNEOS website,and on-site video and meteorite search results.Then entry process and influence on ground of Songyuan meteoroid are computed and analyzed by AICA code(Asteroid Impact Consequence Analysis)developed by authors of this paper.Parent body's structure of the meteoroid are also inferred.It is indicated from the results that the parent body of the meteoroid is a stony asteroid with rubble pile structure and has a mass of about 2.4 tons.The meteoroid broke up at altitude of 69.8km,with main airburst at altitude of 47.3km and secondary airbursts in the subsequent entry process.Large scale fragments were all disintegrated or ablated,and no large scale meteorite fell onto ground.The hazard effects caused by shock wave and heat radiation in entry process was too little to be harmful to population and facilities.
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