2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 1.9 km || |-id=506 bgcolor=#E9E9E9 | 164506 || || — || April 7, 2006 || Socorro || LINEAR || TIN || align=right | 3.5 km || |-id=507 bgcolor=#E9E9E9 | 164507 || || — || April 8, 2006 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=508 bgcolor=#d6d6d6 | 164508 || || — || April 5, 2006 || Siding Spring || SSS || — || align=right | 7.1 km || |-id=509 bgcolor=#d6d6d6 | 164509 || || — || April 2, 2006 || Catalina || CSS || — || align=right | 7.4 km || |-id=510 bgcolor=#E9E9E9 | 164510 || || — || April 2, 2006 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.7 km || |-id=511 bgcolor=#d6d6d6 | 164511 || || — || April 18, 2006 || Catalina || CSS || — || align=right | 5.7 km || |-id=512 bgcolor=#d6d6d6 | 164512 || || — || April 18, 2006 || Palomar || NEAT || — || align=right | 7.6 km || |-id=513 bgcolor=#d6d6d6 | 164513 || || — || April 19, 2006 || Palomar || NEAT || EUP || align=right | 7.2 km || |-id=514 bgcolor=#E9E9E9 | 164514 || || — || April 19, 2006 || Kitt Peak || Spacewatch || NEM || align=right | 3.7 km || |-id=515 bgcolor=#E9E9E9 | 164515 || || — || April 19, 2006 || Anderson Mesa || LONEOS || — || align=right | 2.7 km || |-id=516 bgcolor=#fefefe | 164516 || || — || April 19, 2006 || Palomar || NEAT || FLO || align=right data-sort-value="0.99" | 990 m || |-id=517 bgcolor=#d6d6d6 | 164517 || || — || April 20, 2006 || Kitt Peak || Spacewatch || 628 || align=right | 2.6 km || |-id=518 bgcolor=#E9E9E9 | 164518 Patoche || || || April 19, 2006 || Saint-Sulpice || B. Christophe || — || align=right | 2.5 km || |-id=519 bgcolor=#E9E9E9 | 164519 || || — || April 20, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.4 km || |-id=520 bgcolor=#E9E9E9 | 164520 || || — || April 21, 2006 || Catalina || CSS || — || align=right | 2.2 km || |-id=521 bgcolor=#fefefe | 164521 || || — || April 20, 2006 || Kitt Peak || Spacewatch || — || align=right | 1.2 km || |-id=522 bgcolor=#E9E9E9 | 164522