|| — || December 7, 1999 || Socorro || LINEAR || — || align=right | 2.6 km || |-id=444 bgcolor=#fefefe | 53444 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=445 bgcolor=#fefefe | 53445 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 7.0 km || |-id=446 bgcolor=#fefefe | 53446 || || — || December 7, 1999 || Socorro || LINEAR || V || align=right | 2.0 km || |-id=447 bgcolor=#fefefe | 53447 || || — || December 8, 1999 || Nachi-Katsuura || Y. Shimizu, T. Urata || — || align=right | 2.0 km || |-id=448 bgcolor=#fefefe | 53448 || || — || December 11, 1999 || Oizumi || T. Kobayashi || — || align=right | 2.3 km || |-id=449 bgcolor=#C2FFFF | 53449 || || — || December 12, 1999 || Socorro || LINEAR || L4 || align=right | 22 km || |-id=450 bgcolor=#fefefe | 53450 || || — || December 12, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=451 bgcolor=#fefefe | 53451 || || — || December 5, 1999 || Socorro || LINEAR || H || align=right | 1.8 km || |-id=452 bgcolor=#fefefe | 53452 || || — || December 5, 1999 || Socorro || LINEAR || H || align=right | 1.5 km || |-id=453 bgcolor=#fefefe | 53453 || || — || December 12, 1999 || Socorro || LINEAR || H || align=right | 2.3 km || |-id=454 bgcolor=#fefefe | 53454 || || — || December 13, 1999 || Socorro || LINEAR || H || align=right | 4.7 km || |-id=455 bgcolor=#fefefe | 53455 || || — || December 2, 1999 || Kitt Peak || Spacewatch || V || align=right | 1.7 km || |-id=456 bgcolor=#fefefe | 53456 || || — || December 12, 1999 || Socorro || LINEAR || H || align=right | 2.0 km || |-id=457 bgcolor=#fefefe | 53457 || || — || December 14, 1999 || Socorro || LINEAR || H || align=right | 1.6 km || |-id=458 bgcolor=#fefefe | 53458 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 1.6 km || |-id=459 bgcolor=#fefefe | 53459 || || — || December 8, 1999 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=460 bgcolor=#fefefe | 53460 || || — || December