| 401550 || || — || November 12, 2006 || Mount Lemmon || Mount Lemmon Survey || HOF || align=right | 2.1 km || |-id=551 bgcolor=#d6d6d6 | 401551 || || — || August 18, 2009 || Kitt Peak || Spacewatch || — || align=right | 3.0 km || |-id=552 bgcolor=#d6d6d6 | 401552 || || — || April 7, 2003 || Kitt Peak || Spacewatch || EOS || align=right | 2.3 km || |-id=553 bgcolor=#E9E9E9 | 401553 || || — || March 15, 2004 || Socorro || LINEAR || — || align=right | 2.6 km || |-id=554 bgcolor=#d6d6d6 | 401554 || || — || April 17, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.8 km || |-id=555 bgcolor=#fefefe | 401555 || || — || March 13, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right data-sort-value="0.53" | 530 m || |-id=556 bgcolor=#E9E9E9 | 401556 || || — || October 18, 2006 || Kitt Peak || Spacewatch || — || align=right | 2.8 km || |-id=557 bgcolor=#E9E9E9 | 401557 || || — || October 24, 2011 || Kitt Peak || Spacewatch || — || align=right | 1.8 km || |-id=558 bgcolor=#d6d6d6 | 401558 || || — || September 13, 2005 || Catalina || CSS || 615 || align=right | 1.8 km || |-id=559 bgcolor=#d6d6d6 | 401559 || || — || February 16, 2007 || Catalina || CSS || — || align=right | 4.3 km || |-id=560 bgcolor=#E9E9E9 | 401560 || || — || August 29, 2006 || Catalina || CSS || — || align=right | 1.3 km || |-id=561 bgcolor=#E9E9E9 | 401561 || || — || October 16, 2006 || Catalina || CSS || — || align=right | 2.1 km || |-id=562 bgcolor=#E9E9E9 | 401562 || || — || October 3, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.7 km || |-id=563 bgcolor=#fefefe | 401563 || || — || April 8, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.1 km || |-id=564 bgcolor=#d6d6d6 | 401564 || || — || March 7, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.5 km || |-id=565 bgcolor=#E9E9E9 | 401565 || || — || February 20, 2009 || Mount Lemmon || Mount Lemmon Survey || EUN || align=right | 1.2 km || |-id=566 bgcolor=#E9E9E9 | 401566 || || — || June 13,