Peak || Spacewatch || — || align=right data-sort-value="0.81" | 810 m || |-id=272 bgcolor=#E9E9E9 | 463272 || || — || January 19, 2012 || Mount Lemmon || Mount Lemmon Survey || MAR || align=right | 1.6 km || |-id=273 bgcolor=#E9E9E9 | 463273 || || — || November 11, 2009 || Kitt Peak || Spacewatch || JUN || align=right | 1.1 km || |-id=274 bgcolor=#E9E9E9 | 463274 || || — || October 14, 2009 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.8 km || |-id=275 bgcolor=#E9E9E9 | 463275 || || — || December 24, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=276 bgcolor=#E9E9E9 | 463276 || || — || December 6, 2010 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.3 km || |-id=277 bgcolor=#d6d6d6 | 463277 || || — || April 13, 2012 || Kitt Peak || Spacewatch || EOS || align=right | 2.5 km || |-id=278 bgcolor=#E9E9E9 | 463278 || || — || December 10, 2001 || Kitt Peak || Spacewatch || — || align=right | 1.9 km || |-id=279 bgcolor=#E9E9E9 | 463279 || || — || January 2, 2012 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.4 km || |-id=280 bgcolor=#E9E9E9 | 463280 || || — || September 7, 2008 || Catalina || CSS || — || align=right | 2.3 km || |-id=281 bgcolor=#E9E9E9 | 463281 || || — || March 27, 2012 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.2 km || |-id=282 bgcolor=#FFC2E0 | 463282 || || — || April 22, 2012 || Catalina || CSS || APO +1km || align=right | 1.4 km || |-id=283 bgcolor=#E9E9E9 | 463283 || || — || March 12, 2007 || Mount Lemmon || Mount Lemmon Survey || EUN || align=right | 1.2 km || |-id=284 bgcolor=#E9E9E9 | 463284 || || — || October 15, 2009 || Kitt Peak || Spacewatch || — || align=right | 2.1 km || |-id=285 bgcolor=#E9E9E9 | 463285 || || — || March 27, 2012 || Mount Lemmon || Mount Lemmon Survey || MAR || align=right | 1.2 km || |-id=286 bgcolor=#E9E9E9 | 463286 || || — || April 20, 2012 || Kitt Peak || Spacewatch || — || align=right | 1.7 km || |-id=287 bgcolor=#E9E9E9 | 463287 || || — || September 22, 2009 || Mount Lemmon ||