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2005 YU55Tài liệu tham khảo
WikiPedia: 2005_YU55 http://www.news.cornell.edu/stories/April10/Arecib... http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU... http://neo.jpl.nasa.gov/news/news171.html http://science.jpl.nasa.gov/people/Benner/ http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005YU55 http://vnexpress.net/gl/khoa-hoc/2011/11/thien-tha... http://www.minorplanetcenter.org/mpec/K05/K05Y47.h...