|| V || align=right | 2.6 km || |-id=256 bgcolor=#fefefe | 24256 || || — || December 7, 1999 || Catalina || CSS || — || align=right | 5.9 km || |-id=257 bgcolor=#fefefe | 24257 || || — || December 7, 1999 || Catalina || CSS || FLO || align=right | 2.9 km || |-id=258 bgcolor=#E9E9E9 | 24258 || || — || December 9, 1999 || Fountain Hills || C. W. Juels || — || align=right | 3.4 km || |-id=259 bgcolor=#fefefe | 24259 Chriswalker || || || December 12, 1999 || Goodricke-Pigott || R. A. Tucker || PHO || align=right | 3.3 km || |-id=260 bgcolor=#E9E9E9 | 24260 Kriváň || || || December 13, 1999 || Ondřejov || P. Kušnirák || EUN || align=right | 8.3 km || |-id=261 bgcolor=#fefefe | 24261 Judilegault || || || December 12, 1999 || Socorro || LINEAR || V || align=right | 2.9 km || |-id=262 bgcolor=#E9E9E9 | 24262 || || — || December 12, 1999 || Socorro || LINEAR || — || align=right | 5.1 km || |-id=263 bgcolor=#d6d6d6 | 24263 || || — || December 12, 1999 || Socorro || LINEAR || EOS || align=right | 8.3 km || |-id=264 bgcolor=#E9E9E9 | 24264 || || — || December 15, 1999 || Fountain Hills || C. W. Juels || GEF || align=right | 3.8 km || |-id=265 bgcolor=#fefefe | 24265 Banthonytwarog || || || December 13, 1999 || Farpoint || G. Hug, G. Bell || — || align=right | 3.2 km || |-id=266 bgcolor=#E9E9E9 | 24266 || || — || December 13, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 3.5 km || |-id=267 bgcolor=#fefefe | 24267 || || — || December 6, 1999 || Kitt Peak || Spacewatch || — || align=right | 1.6 km || |-id=268 bgcolor=#E9E9E9 | 24268 Charconley || || || December 8, 1999 || Socorro || LINEAR || HOF || align=right | 7.8 km || |-id=269 bgcolor=#fefefe | 24269 Kittappa || || || December 8, 1999 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=270 bgcolor=#E9E9E9 | 24270 Dougskinner || || || December 8, 1999 || Socorro || LINEAR || — || align=right | 6.0 km || |-id=271 bgcolor=#E9E9E9 | 24271 || || — || December 8, 1999 || Socorro || LINEAR || NEM || align=right | 7.8 km || |-id=272 bgcolor=#fefefe | 24272 || || — || December