|| align=right | 3.1 km || |-id=485 bgcolor=#fefefe | 401485 || || — || February 10, 2002 || Socorro || LINEAR || — || align=right data-sort-value="0.90" | 900 m || |-id=486 bgcolor=#E9E9E9 | 401486 || || — || April 2, 2005 || Siding Spring || SSS || — || align=right | 1.5 km || |-id=487 bgcolor=#E9E9E9 | 401487 || || — || March 18, 2004 || Kitt Peak || Spacewatch || AGN || align=right | 1.5 km || |-id=488 bgcolor=#E9E9E9 | 401488 || || — || November 15, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.4 km || |-id=489 bgcolor=#E9E9E9 | 401489 || || — || April 25, 2000 || Kitt Peak || Spacewatch || — || align=right | 2.1 km || |-id=490 bgcolor=#fefefe | 401490 || || — || September 19, 1973 || Palomar || PLS || — || align=right data-sort-value="0.93" | 930 m || |-id=491 bgcolor=#fefefe | 401491 || || — || January 23, 2006 || Catalina || CSS || — || align=right data-sort-value="0.88" | 880 m || |-id=492 bgcolor=#E9E9E9 | 401492 || || — || December 17, 2003 || Kitt Peak || Spacewatch || EUN || align=right | 1.4 km || |-id=493 bgcolor=#fefefe | 401493 || || — || September 29, 2003 || Kitt Peak || Spacewatch || — || align=right | 1.1 km || |-id=494 bgcolor=#d6d6d6 | 401494 || || — || July 17, 2010 || WISE || WISE || LUT || align=right | 5.8 km || |-id=495 bgcolor=#fefefe | 401495 || || — || August 22, 2004 || Kitt Peak || Spacewatch || V || align=right data-sort-value="0.55" | 550 m || |-id=496 bgcolor=#d6d6d6 | 401496 || || — || October 31, 1999 || Kitt Peak || Spacewatch || — || align=right | 3.0 km || |-id=497 bgcolor=#d6d6d6 | 401497 || || — || December 21, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.2 km || |-id=498 bgcolor=#fefefe | 401498 || || — || April 8, 2002 || Kitt Peak || Spacewatch || NYS || align=right data-sort-value="0.74" | 740 m || |-id=499 bgcolor=#fefefe | 401499 || || — || September 9, 2007 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.94" | 940 m || |-id=500 bgcolor=#fefefe | 401500 || || — || February 27, 2006 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.84" | 840 m || |} 401501–401600 |-bgcolor=#E9E9E9