|| align=right | 1.3 km || |-id=277 bgcolor=#d6d6d6 | 464277 || || — || March 10, 2005 || Anderson Mesa || LONEOS || — || align=right | 4.9 km || |-id=278 bgcolor=#fefefe | 464278 || || — || December 16, 2007 || Mount Lemmon || Mount Lemmon Survey || H || align=right data-sort-value="0.94" | 940 m || |-id=279 bgcolor=#d6d6d6 | 464279 || || — || February 7, 2010 || WISE || WISE || — || align=right | 3.2 km || |-id=280 bgcolor=#E9E9E9 | 464280 || || — || April 1, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.5 km || |-id=281 bgcolor=#d6d6d6 | 464281 || || — || February 1, 2005 || Kitt Peak || Spacewatch || THM || align=right | 2.9 km || |-id=282 bgcolor=#E9E9E9 | 464282 || || — || April 28, 2004 || Kitt Peak || Spacewatch || — || align=right | 1.7 km || |-id=283 bgcolor=#d6d6d6 | 464283 || || — || January 7, 2006 || Mount Lemmon || Mount Lemmon Survey || EOS || align=right | 1.6 km || |-id=284 bgcolor=#E9E9E9 | 464284 || || — || October 8, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.4 km || |-id=285 bgcolor=#d6d6d6 | 464285 || || — || March 2, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.6 km || |-id=286 bgcolor=#d6d6d6 | 464286 || || — || March 8, 2005 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.3 km || |-id=287 bgcolor=#d6d6d6 | 464287 || || — || May 2, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.9 km || |-id=288 bgcolor=#d6d6d6 | 464288 || || — || January 13, 2005 || Kitt Peak || Spacewatch || — || align=right | 2.7 km || |-id=289 bgcolor=#d6d6d6 | 464289 || || — || September 24, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.7 km || |-id=290 bgcolor=#d6d6d6 | 464290 || || — || March 11, 2010 || WISE || WISE || EOS || align=right | 1.7 km || |-id=291 bgcolor=#fefefe | 464291 || || — || October 19, 2011 || Mount Lemmon || Mount Lemmon Survey || — || align=right data-sort-value="0.55" | 550 m || |-id=292 bgcolor=#E9E9E9 | 464292 || || — || March 10, 2007 || Kitt Peak || Spacewatch || —