| 3.5 km || |-id=228 bgcolor=#E9E9E9 | 464228 || || — || November 27, 2009 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.8 km || |-id=229 bgcolor=#d6d6d6 | 464229 || || — || August 23, 2007 || Kitt Peak || Spacewatch || EOS || align=right | 2.3 km || |-id=230 bgcolor=#d6d6d6 | 464230 || || — || September 13, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.1 km || |-id=231 bgcolor=#d6d6d6 | 464231 || || — || January 18, 2005 || Kitt Peak || Spacewatch || — || align=right | 4.3 km || |-id=232 bgcolor=#E9E9E9 | 464232 || || — || February 7, 2002 || Kitt Peak || Spacewatch || — || align=right | 2.5 km || |-id=233 bgcolor=#E9E9E9 | 464233 || || — || November 28, 2005 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.6 km || |-id=234 bgcolor=#E9E9E9 | 464234 || || — || August 8, 2004 || Socorro || LINEAR || — || align=right | 1.2 km || |-id=235 bgcolor=#d6d6d6 | 464235 || || — || January 19, 1994 || Kitt Peak || Spacewatch || — || align=right | 2.7 km || |-id=236 bgcolor=#d6d6d6 | 464236 || || — || September 15, 2006 || Kitt Peak || Spacewatch || — || align=right | 3.8 km || |-id=237 bgcolor=#d6d6d6 | 464237 || || — || June 1, 2010 || WISE || WISE || — || align=right | 3.6 km || |-id=238 bgcolor=#d6d6d6 | 464238 || || — || October 15, 2007 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.5 km || |-id=239 bgcolor=#d6d6d6 | 464239 || || — || January 15, 1996 || Kitt Peak || Spacewatch || 7:4 || align=right | 4.2 km || |-id=240 bgcolor=#d6d6d6 | 464240 || || — || March 13, 2010 || Mount Lemmon || Mount Lemmon Survey || HYG || align=right | 2.5 km || |-id=241 bgcolor=#d6d6d6 | 464241 || || — || August 13, 2006 || Palomar || NEAT || — || align=right | 4.2 km || |-id=242 bgcolor=#d6d6d6 | 464242 || || — || November 13, 1996 || Kitt Peak || Spacewatch || THM || align=right | 3.2 km || |-id=243 bgcolor=#E9E9E9 | 464243 || || — || March 3, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.4 km || |-id=244 bgcolor=#E9E9E9 |