km || |-id=529 bgcolor=#fefefe | 20529 Zwerling || || || September 7, 1999 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=530 bgcolor=#d6d6d6 | 20530 Johnayres || || || September 7, 1999 || Socorro || LINEAR || THM || align=right | 7.0 km || |-id=531 bgcolor=#fefefe | 20531 Stevebabcock || || || September 7, 1999 || Socorro || LINEAR || NYS || align=right | 3.6 km || |-id=532 bgcolor=#E9E9E9 | 20532 Benbilby || || || September 7, 1999 || Socorro || LINEAR || — || align=right | 3.6 km || |-id=533 bgcolor=#d6d6d6 | 20533 Irmabonham || || || September 7, 1999 || Socorro || LINEAR || KOR || align=right | 5.3 km || |-id=534 bgcolor=#E9E9E9 | 20534 Bozeman || || || September 7, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=535 bgcolor=#fefefe | 20535 Marshburrows || || || September 7, 1999 || Socorro || LINEAR || — || align=right | 3.2 km || |-id=536 bgcolor=#fefefe | 20536 Tracicarter || || || September 7, 1999 || Socorro || LINEAR || NYS || align=right | 2.2 km || |-id=537 bgcolor=#fefefe | 20537 Sandraderosa || || || September 7, 1999 || Socorro || LINEAR || V || align=right | 2.6 km || |-id=538 bgcolor=#fefefe | 20538 || || — || September 7, 1999 || Socorro || LINEAR || — || align=right | 3.6 km || |-id=539 bgcolor=#d6d6d6 | 20539 Gadberry || || || September 7, 1999 || Socorro || LINEAR || KOR || align=right | 4.6 km || |-id=540 bgcolor=#E9E9E9 | 20540 Marhalpern || || || September 7, 1999 || Socorro || LINEAR || PAD || align=right | 6.9 km || |-id=541 bgcolor=#E9E9E9 | 20541 || || — || September 7, 1999 || Socorro || LINEAR || — || align=right | 6.5 km || |-id=542 bgcolor=#E9E9E9 | 20542 || || — || September 7, 1999 || Socorro || LINEAR || — || align=right | 5.3 km || |-id=543 bgcolor=#d6d6d6 | 20543 || || — || September 7, 1999 || Socorro || LINEAR || ALA || align=right | 18 km || |-id=544 bgcolor=#fefefe | 20544 Kimhansell || || || September 8, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=545 bgcolor=#fefefe | 20545 Karenhowell || || || September 8, 1999 || Socorro || LINEAR || — || align=right | 3.1 km || |-id=546 bgcolor=#d6d6d6 | 20546 || || —