| 401632 || || — || April 14, 2008 || Kitt Peak || Spacewatch || — || align=right | 2.4 km || |-id=633 bgcolor=#d6d6d6 | 401633 || || — || October 8, 2004 || Kitt Peak || Spacewatch || — || align=right | 3.2 km || |-id=634 bgcolor=#E9E9E9 | 401634 || || — || February 2, 2000 || Prescott || P. G. Comba || MAR || align=right | 1.5 km || |-id=635 bgcolor=#E9E9E9 | 401635 || || — || March 31, 2009 || Mount Lemmon || Mount Lemmon Survey || EUN || align=right | 1.2 km || |-id=636 bgcolor=#d6d6d6 | 401636 || || — || December 27, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.6 km || |-id=637 bgcolor=#E9E9E9 | 401637 || || — || September 30, 2006 || Mount Lemmon || Mount Lemmon Survey || || align=right | 2.5 km || |-id=638 bgcolor=#d6d6d6 | 401638 || || — || September 17, 2009 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 3.5 km || |-id=639 bgcolor=#d6d6d6 | 401639 || || — || March 13, 2007 || Kitt Peak || Spacewatch || — || align=right | 3.2 km || |-id=640 bgcolor=#E9E9E9 | 401640 || || — || September 17, 2006 || Catalina || CSS || — || align=right | 1.9 km || |-id=641 bgcolor=#d6d6d6 | 401641 || || — || November 13, 1999 || Kitt Peak || Spacewatch || TIR || align=right | 3.9 km || |-id=642 bgcolor=#d6d6d6 | 401642 || || — || January 21, 2001 || Socorro || LINEAR || LIX || align=right | 5.5 km || |-id=643 bgcolor=#E9E9E9 | 401643 || || — || March 16, 2009 || Kitt Peak || Spacewatch || MAR || align=right | 1.1 km || |-id=644 bgcolor=#fefefe | 401644 || || — || January 9, 2002 || Socorro || LINEAR || — || align=right | 1.0 km || |-id=645 bgcolor=#d6d6d6 | 401645 || || — || October 7, 2010 || Mount Lemmon || Mount Lemmon Survey || EOS || align=right | 2.6 km || |-id=646 bgcolor=#E9E9E9 | 401646 || || — || October 23, 2006 || Kitt Peak || Spacewatch || — || align=right | 2.6 km || |-id=647 bgcolor=#d6d6d6 | 401647 || || — || February 10, 2007 || Catalina || CSS || — || align=right | 4.0 km || |-id=648 bgcolor=#d6d6d6 | 401648 || || — || September 11, 2004 ||