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WikiPedia: 1994_WR12 http://neo.jpl.nasa.gov/risk/ http://neo.jpl.nasa.gov/risk/1994wr12.html http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1994WR12;cad... http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1994WR12;cad... http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3005969 http://www.minorplanetcenter.net/db_search/show_ob... http://www.minorplanetcenter.net/mpec/J94/J94Y05.h... https://cneos.jpl.nasa.gov/sentry/removed.html https://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3005969#con...