KOR || align=right | 2.0 km || |-id=539 bgcolor=#E9E9E9 | 164539 || || — || May 1, 2006 || Kitt Peak || Spacewatch || HEN || align=right | 1.4 km || |-id=540 bgcolor=#E9E9E9 | 164540 || || — || May 1, 2006 || Kitt Peak || Spacewatch || AGN || align=right | 1.4 km || |-id=541 bgcolor=#E9E9E9 | 164541 || || — || May 1, 2006 || Kitt Peak || Spacewatch || — || align=right | 2.4 km || |-id=542 bgcolor=#E9E9E9 | 164542 || || — || May 2, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.7 km || |-id=543 bgcolor=#d6d6d6 | 164543 || || — || May 2, 2006 || Mount Lemmon || Mount Lemmon Survey || KOR || align=right | 1.8 km || |-id=544 bgcolor=#E9E9E9 | 164544 || || — || May 3, 2006 || Kitt Peak || Spacewatch || — || align=right | 3.5 km || |-id=545 bgcolor=#fefefe | 164545 || || — || May 3, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.3 km || |-id=546 bgcolor=#d6d6d6 | 164546 || || — || May 6, 2006 || Mount Lemmon || Mount Lemmon Survey || KOR || align=right | 2.3 km || |-id=547 bgcolor=#fefefe | 164547 || || — || May 6, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.4 km || |-id=548 bgcolor=#E9E9E9 | 164548 || || — || May 5, 2006 || Anderson Mesa || LONEOS || — || align=right | 2.8 km || |-id=549 bgcolor=#E9E9E9 | 164549 || || — || May 6, 2006 || Siding Spring || SSS || — || align=right | 3.5 km || |-id=550 bgcolor=#E9E9E9 | 164550 || 2006 KP || — || May 17, 2006 || Palomar || NEAT || — || align=right | 1.5 km || |-id=551 bgcolor=#E9E9E9 | 164551 || || — || May 19, 2006 || Reedy Creek || J. Broughton || — || align=right | 3.4 km || |-id=552 bgcolor=#E9E9E9 | 164552 || || — || May 19, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.8 km || |-id=553 bgcolor=#E9E9E9 | 164553 || || — || May 19, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.3 km || |-id=554 bgcolor=#E9E9E9 | 164554 || || — || May 19, 2006 || Catalina || CSS || — || align=right