| 2.7 km || |-id=518 bgcolor=#fefefe | 50518 || || — || February 29, 2000 || Socorro || LINEAR || — || align=right | 1.4 km || |-id=519 bgcolor=#E9E9E9 | 50519 || || — || February 29, 2000 || Socorro || LINEAR || HNS || align=right | 3.6 km || |-id=520 bgcolor=#fefefe | 50520 || || — || February 28, 2000 || Socorro || LINEAR || FLO || align=right | 3.7 km || |-id=521 bgcolor=#E9E9E9 | 50521 || || — || February 29, 2000 || Socorro || LINEAR || HEN || align=right | 2.4 km || |-id=522 bgcolor=#E9E9E9 | 50522 || || — || February 29, 2000 || Socorro || LINEAR || — || align=right | 2.7 km || |-id=523 bgcolor=#E9E9E9 | 50523 || || — || February 27, 2000 || Catalina || CSS || — || align=right | 4.6 km || |-id=524 bgcolor=#E9E9E9 | 50524 || || — || February 27, 2000 || Catalina || CSS || — || align=right | 2.6 km || |-id=525 bgcolor=#E9E9E9 | 50525 || || — || March 3, 2000 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=526 bgcolor=#fefefe | 50526 || || — || March 2, 2000 || Kitt Peak || Spacewatch || NYS || align=right | 1.1 km || |-id=527 bgcolor=#E9E9E9 | 50527 || || — || March 2, 2000 || Kitt Peak || Spacewatch || ADE || align=right | 3.7 km || |-id=528 bgcolor=#E9E9E9 | 50528 || || — || March 3, 2000 || Socorro || LINEAR || EUN || align=right | 3.6 km || |-id=529 bgcolor=#E9E9E9 | 50529 || || — || March 3, 2000 || Socorro || LINEAR || — || align=right | 4.3 km || |-id=530 bgcolor=#E9E9E9 | 50530 || || — || March 3, 2000 || Socorro || LINEAR || — || align=right | 3.5 km || |-id=531 bgcolor=#E9E9E9 | 50531 || || — || March 4, 2000 || Socorro || LINEAR || — || align=right | 7.2 km || |-id=532 bgcolor=#d6d6d6 | 50532 || || — || March 4, 2000 || Socorro || LINEAR || — || align=right | 12 km || |-id=533 bgcolor=#d6d6d6 | 50533 || || — || March 4, 2000 || Socorro || LINEAR || EMA || align=right | 11 km || |-id=534 bgcolor=#E9E9E9 | 50534 || || — || March 4, 2000 || Socorro || LINEAR || GEF || align=right | 4.6 km || |-id=535 bgcolor=#E9E9E9 |