|| || — || December 7, 1999 || Socorro || LINEAR || EUN || align=right | 5.4 km || |-id=490 bgcolor=#fefefe | 25490 Kevinkelly || || || December 7, 1999 || Socorro || LINEAR || NYS || align=right | 6.6 km || |-id=491 bgcolor=#E9E9E9 | 25491 Meador || || || December 7, 1999 || Socorro || LINEAR || — || align=right | 5.0 km || |-id=492 bgcolor=#fefefe | 25492 Firnberg || || || December 7, 1999 || Socorro || LINEAR || — || align=right | 5.2 km || |-id=493 bgcolor=#E9E9E9 | 25493 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 8.1 km || |-id=494 bgcolor=#E9E9E9 | 25494 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 6.4 km || |-id=495 bgcolor=#E9E9E9 | 25495 Michaelroddy || || || December 7, 1999 || Socorro || LINEAR || — || align=right | 4.2 km || |-id=496 bgcolor=#E9E9E9 | 25496 || || — || December 7, 1999 || Socorro || LINEAR || EUN || align=right | 5.8 km || |-id=497 bgcolor=#E9E9E9 | 25497 Brauerman || || || December 7, 1999 || Socorro || LINEAR || — || align=right | 3.9 km || |-id=498 bgcolor=#d6d6d6 | 25498 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 8.0 km || |-id=499 bgcolor=#fefefe | 25499 || || — || December 7, 1999 || Socorro || LINEAR || V || align=right | 2.8 km || |-id=500 bgcolor=#d6d6d6 | 25500 || || — || December 7, 1999 || Socorro || LINEAR || THM || align=right | 8.3 km || |} 25501–25600 |-bgcolor=#fefefe | 25501 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=502 bgcolor=#d6d6d6 | 25502 || || — || December 7, 1999 || Socorro || LINEAR || EOS || align=right | 6.0 km || |-id=503 bgcolor=#E9E9E9 | 25503 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 5.5 km || |-id=504 bgcolor=#d6d6d6 | 25504 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 10 km || |-id=505 bgcolor=#fefefe | 25505 || || — || December 7, 1999 || Oizumi || T. Kobayashi || slow || align=right | 5.6 km || |-id=506 bgcolor=#E9E9E9 | 25506 || || — || December 9, 1999