| 21637 Ninahuffman || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=638 bgcolor=#fefefe | 21638 Nicjachowski || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=639 bgcolor=#fefefe | 21639 Davidkaufman || || || July 14, 1999 || Socorro || LINEAR || FLO || align=right | 5.8 km || |-id=640 bgcolor=#fefefe | 21640 Petekirkland || || || July 14, 1999 || Socorro || LINEAR || FLO || align=right | 2.6 km || |-id=641 bgcolor=#E9E9E9 | 21641 Tiffanyko || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 3.0 km || |-id=642 bgcolor=#fefefe | 21642 Kominers || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=643 bgcolor=#fefefe | 21643 Kornev || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=644 bgcolor=#fefefe | 21644 Vinay || || || July 13, 1999 || Socorro || LINEAR || — || align=right | 3.1 km || |-id=645 bgcolor=#E9E9E9 | 21645 Chentsaiwei || || || July 14, 1999 || Socorro || LINEAR || — || align=right | 4.0 km || |-id=646 bgcolor=#E9E9E9 | 21646 Joshuaturner || || || July 12, 1999 || Socorro || LINEAR || EUN || align=right | 3.7 km || |-id=647 bgcolor=#E9E9E9 | 21647 Carlturner || || || July 12, 1999 || Socorro || LINEAR || — || align=right | 8.6 km || |-id=648 bgcolor=#E9E9E9 | 21648 Gravanschaik || || || July 12, 1999 || Socorro || LINEAR || MIT || align=right | 8.8 km || |-id=649 bgcolor=#E9E9E9 | 21649 Vardhana || || || July 13, 1999 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=650 bgcolor=#fefefe | 21650 Tilgner || || || July 17, 1999 || Gnosca || S. Sposetti || V || align=right | 2.2 km || |-id=651 bgcolor=#d6d6d6 | 21651 Mission Valley || || || July 19, 1999 || Farpoint || G. Bell || SAN || align=right | 3.6 km || |-id=652 bgcolor=#E9E9E9 | 21652 Vasishtha || || || July 22, 1999 || Socorro || LINEAR || — || align=right | 11 km || |-id=653 bgcolor=#E9E9E9 | 21653 Davidwang || || || July 22, 1999 || Socorro || LINEAR || TIN || align=right | 8.8 km || |-id=654 bgcolor=#fefefe | 21654 || 1999 PZ ||