— || December 12, 1999 || Socorro || LINEAR || — || align=right | 7.5 km || |-id=576 bgcolor=#fefefe | 25576 || || — || December 14, 1999 || Socorro || LINEAR || — || align=right | 2.7 km || |-id=577 bgcolor=#fefefe | 25577 Wangmanqiang || || || December 14, 1999 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=578 bgcolor=#d6d6d6 | 25578 || || — || December 13, 1999 || Kitt Peak || Spacewatch || KOR || align=right | 3.5 km || |-id=579 bgcolor=#d6d6d6 | 25579 || || — || December 13, 1999 || Kitt Peak || Spacewatch || THM || align=right | 8.8 km || |-id=580 bgcolor=#E9E9E9 | 25580 Xuelai || || || December 14, 1999 || Socorro || LINEAR || — || align=right | 5.1 km || |-id=581 bgcolor=#E9E9E9 | 25581 || || — || December 14, 1999 || Socorro || LINEAR || — || align=right | 8.6 km || |-id=582 bgcolor=#d6d6d6 | 25582 || || — || December 14, 1999 || Socorro || LINEAR || — || align=right | 11 km || |-id=583 bgcolor=#d6d6d6 | 25583 || || — || December 14, 1999 || Socorro || LINEAR || EOS || align=right | 12 km || |-id=584 bgcolor=#E9E9E9 | 25584 Zhangnelson || || || December 15, 1999 || Socorro || LINEAR || — || align=right | 4.0 km || |-id=585 bgcolor=#d6d6d6 | 25585 || || — || December 13, 1999 || Kitt Peak || Spacewatch || THM || align=right | 6.5 km || |-id=586 bgcolor=#d6d6d6 | 25586 || || — || December 13, 1999 || Kitt Peak || Spacewatch || EOS || align=right | 5.8 km || |-id=587 bgcolor=#fefefe | 25587 || || — || December 15, 1999 || Kitt Peak || Spacewatch || FLO || align=right | 2.4 km || |-id=588 bgcolor=#E9E9E9 | 25588 || || — || December 7, 1999 || Catalina || CSS || — || align=right | 4.4 km || |-id=589 bgcolor=#E9E9E9 | 25589 Danicamckellar || || || December 9, 1999 || Catalina || CSS || — || align=right | 4.8 km || |-id=590 bgcolor=#E9E9E9 | 25590 || || — || December 3, 1999 || Socorro || LINEAR || — || align=right | 8.1 km || |-id=591 bgcolor=#d6d6d6 | 25591 || || — || December 9, 1999 || Kitt Peak || Spacewatch || THM || align=right | 7.2 km || |-id=592 bgcolor=#fefefe | 25592 || || — || December