|| || || April 7, 1999 || Socorro || LINEAR || — || align=right | 4.2 km || |-id=636 bgcolor=#d6d6d6 | 31636 || || — || April 7, 1999 || Socorro || LINEAR || — || align=right | 9.4 km || |-id=637 bgcolor=#E9E9E9 | 31637 Bhimaraju || || || April 7, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=638 bgcolor=#E9E9E9 | 31638 || || — || April 7, 1999 || Socorro || LINEAR || — || align=right | 5.5 km || |-id=639 bgcolor=#fefefe | 31639 Bodoni || || || April 6, 1999 || Socorro || LINEAR || — || align=right | 2.6 km || |-id=640 bgcolor=#E9E9E9 | 31640 Johncaven || || || April 6, 1999 || Socorro || LINEAR || — || align=right | 3.1 km || |-id=641 bgcolor=#fefefe | 31641 Cevasco || || || April 6, 1999 || Socorro || LINEAR || NYS || align=right | 2.7 km || |-id=642 bgcolor=#E9E9E9 | 31642 Soyounchoi || || || April 14, 1999 || Socorro || LINEAR || MIS || align=right | 6.2 km || |-id=643 bgcolor=#fefefe | 31643 Natashachugh || || || April 12, 1999 || Socorro || LINEAR || FLO || align=right | 2.8 km || |-id=644 bgcolor=#fefefe | 31644 || || — || April 12, 1999 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=645 bgcolor=#E9E9E9 | 31645 || || — || April 12, 1999 || Socorro || LINEAR || — || align=right | 11 km || |-id=646 bgcolor=#d6d6d6 | 31646 || || — || April 12, 1999 || Socorro || LINEAR || EOS || align=right | 8.4 km || |-id=647 bgcolor=#fefefe | 31647 || || — || April 11, 1999 || Anderson Mesa || LONEOS || — || align=right | 2.7 km || |-id=648 bgcolor=#E9E9E9 | 31648 Pedrosada || || || April 11, 1999 || Anderson Mesa || LONEOS || EUN || align=right | 4.5 km || |-id=649 bgcolor=#d6d6d6 | 31649 || || — || April 7, 1999 || Kitt Peak || Spacewatch || KOR || align=right | 6.0 km || |-id=650 bgcolor=#E9E9E9 | 31650 Frýdek-Místek || 1999 HW || || April 18, 1999 || Ondřejov || P. Pravec || — || align=right | 8.7 km || |-id=651 bgcolor=#fefefe | 31651 || || — || April 19, 1999 || Majorca || Á. López J., R. Pacheco || — || align=right | 3.6 km || |-id=652 bgcolor=#fefefe | 31652