- 23172 Williamartin
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main belt asteroid with anorbital period of 1268.9332329days (3.47years ).cite web | url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=23172 | title = JPL Small-Body Database Browser | accessdate = 2008-06-06 | publisher =NASA ] The asteroid was discovered onApril 29 ,2000 .References
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