Mount Lemmon Survey || — || align=right | 3.6 km || |-id=243 bgcolor=#d6d6d6 | 401243 || || — || January 4, 2012 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.4 km || |-id=244 bgcolor=#d6d6d6 | 401244 || || — || December 24, 2005 || Kitt Peak || Spacewatch || — || align=right | 3.7 km || |-id=245 bgcolor=#E9E9E9 | 401245 || || — || February 2, 2008 || Kitt Peak || Spacewatch || — || align=right | 1.7 km || |-id=246 bgcolor=#E9E9E9 | 401246 || || — || February 1, 2003 || Socorro || LINEAR || — || align=right | 3.1 km || |-id=247 bgcolor=#E9E9E9 | 401247 || || — || February 3, 2008 || Kitt Peak || Spacewatch || (10369) || align=right | 1.3 km || |-id=248 bgcolor=#d6d6d6 | 401248 || || — || January 21, 2012 || Kitt Peak || Spacewatch || — || align=right | 4.0 km || |-id=249 bgcolor=#d6d6d6 | 401249 || || — || January 27, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.1 km || |-id=250 bgcolor=#E9E9E9 | 401250 || || — || December 13, 2006 || Mount Lemmon || Mount Lemmon Survey || NEM || align=right | 2.1 km || |-id=251 bgcolor=#d6d6d6 | 401251 || || — || November 14, 2010 || Kitt Peak || Spacewatch || — || align=right | 2.9 km || |-id=252 bgcolor=#fefefe | 401252 || || — || September 7, 1997 || Caussols || ODAS || — || align=right data-sort-value="0.69" | 690 m || |-id=253 bgcolor=#d6d6d6 | 401253 || || — || February 22, 2007 || Kitt Peak || Spacewatch || EOS || align=right | 1.7 km || |-id=254 bgcolor=#d6d6d6 | 401254 || || — || January 17, 2007 || Kitt Peak || Spacewatch || — || align=right | 3.6 km || |-id=255 bgcolor=#d6d6d6 | 401255 || || — || March 16, 2007 || Kitt Peak || Spacewatch || — || align=right | 3.5 km || |-id=256 bgcolor=#d6d6d6 | 401256 || || — || January 12, 1996 || Kitt Peak || Spacewatch || — || align=right | 2.5 km || |-id=257 bgcolor=#E9E9E9 | 401257 || || — || May 13, 2004 || Kitt Peak || Spacewatch || — || align=right | 2.5 km || |-id=258 bgcolor=#d6d6d6 | 401258 || || — || December 21, 2006 || Mount Lemmon || Mount Lemmon Survey || BRA || align=right | 1.8