580 m || |-id=503 bgcolor=#fefefe | 464503 || || — || October 18, 2007 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.57" | 570 m || |-id=504 bgcolor=#E9E9E9 | 464504 || || — || March 19, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.3 km || |-id=505 bgcolor=#E9E9E9 | 464505 || || — || November 1, 2005 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.8 km || |-id=506 bgcolor=#E9E9E9 | 464506 || || — || September 19, 2009 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.0 km || |-id=507 bgcolor=#d6d6d6 | 464507 || || — || October 10, 2002 || Apache Point || SDSS || — || align=right | 2.5 km || |-id=508 bgcolor=#FA8072 | 464508 || || — || February 10, 2002 || Socorro || LINEAR || — || align=right | 1.1 km || |-id=509 bgcolor=#E9E9E9 | 464509 || || — || December 5, 2010 || Kitt Peak || Spacewatch || HOF || align=right | 3.1 km || |-id=510 bgcolor=#d6d6d6 | 464510 || || — || August 24, 2008 || Kitt Peak || Spacewatch || — || align=right | 2.7 km || |-id=511 bgcolor=#fefefe | 464511 || || — || April 21, 2009 || Kitt Peak || Spacewatch || V || align=right data-sort-value="0.60" | 600 m || |-id=512 bgcolor=#d6d6d6 | 464512 || || — || March 14, 2011 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.2 km || |-id=513 bgcolor=#d6d6d6 | 464513 || || — || April 18, 2007 || Kitt Peak || Spacewatch || — || align=right | 2.0 km || |-id=514 bgcolor=#d6d6d6 | 464514 || || — || March 1, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=515 bgcolor=#fefefe | 464515 || || — || May 22, 2006 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.66" | 660 m || |-id=516 bgcolor=#d6d6d6 | 464516 || || — || December 30, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.7 km || |-id=517 bgcolor=#d6d6d6 | 464517 || || — || December 27, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.8 km || |-id=518 bgcolor=#fefefe | 464518 || || — || September 21, 2003 || Kitt Peak || Spacewatch || V || align=right data-sort-value="0.81" | 810 m || |-id=519 bgcolor=#fefefe