|| align=right | 1.5 km || |-id=258 bgcolor=#E9E9E9 | 460258 || || — || January 2, 2012 || Catalina || CSS || EUN || align=right | 1.4 km || |-id=259 bgcolor=#E9E9E9 | 460259 || || — || September 13, 2005 || Catalina || CSS || — || align=right | 2.4 km || |-id=260 bgcolor=#fefefe | 460260 || || — || October 12, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right data-sort-value="0.79" | 790 m || |-id=261 bgcolor=#E9E9E9 | 460261 || || — || November 3, 2010 || Kitt Peak || Spacewatch || — || align=right | 2.0 km || |-id=262 bgcolor=#d6d6d6 | 460262 || || — || December 25, 2010 || Kitt Peak || Spacewatch || — || align=right | 3.0 km || |-id=263 bgcolor=#fefefe | 460263 || || — || September 11, 2010 || Mount Lemmon || Mount Lemmon Survey || — || align=right data-sort-value="0.75" | 750 m || |-id=264 bgcolor=#E9E9E9 | 460264 || || — || November 1, 2010 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=265 bgcolor=#E9E9E9 | 460265 || || — || February 2, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.3 km || |-id=266 bgcolor=#E9E9E9 | 460266 || || — || October 3, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.2 km || |-id=267 bgcolor=#d6d6d6 | 460267 || || — || May 3, 2008 || Kitt Peak || Spacewatch || EOS || align=right | 1.4 km || |-id=268 bgcolor=#E9E9E9 | 460268 || || — || October 18, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.3 km || |-id=269 bgcolor=#fefefe | 460269 || || — || February 25, 2006 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.78" | 780 m || |-id=270 bgcolor=#E9E9E9 | 460270 || || — || October 6, 2005 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.0 km || |-id=271 bgcolor=#d6d6d6 | 460271 || || — || November 30, 2005 || Kitt Peak || Spacewatch || KOR || align=right | 1.1 km || |-id=272 bgcolor=#fefefe | 460272 || || — || March 25, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.1 km || |-id=273 bgcolor=#E9E9E9 | 460273 || || — || March 23, 2012 || Mount Lemmon || Mount Lemmon Survey || — || align=right |