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WikiPedia: 6639 Marchis https://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639#con... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639#dis... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639#ele... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639#phy... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639&orb... https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2006639;cad... https://www.wikidata.org/wiki/Q83550#P716