53392 || || — || May 12, 1999 || Socorro || LINEAR || — || align=right | 6.0 km || |-id=393 bgcolor=#E9E9E9 | 53393 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 5.4 km || |-id=394 bgcolor=#d6d6d6 | 53394 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 5.6 km || |-id=395 bgcolor=#d6d6d6 | 53395 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 3.6 km || |-id=396 bgcolor=#d6d6d6 | 53396 || || — || May 15, 1999 || Socorro || LINEAR || — || align=right | 4.5 km || |-id=397 bgcolor=#d6d6d6 | 53397 || || — || May 13, 1999 || Socorro || LINEAR || EOS || align=right | 5.0 km || |-id=398 bgcolor=#d6d6d6 | 53398 || || — || May 13, 1999 || Socorro || LINEAR || HYG || align=right | 6.1 km || |-id=399 bgcolor=#d6d6d6 | 53399 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 4.7 km || |-id=400 bgcolor=#d6d6d6 | 53400 || || — || May 13, 1999 || Socorro || LINEAR || EOS || align=right | 5.1 km || |} 53401–53500 |-bgcolor=#d6d6d6 | 53401 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 11 km || |-id=402 bgcolor=#d6d6d6 | 53402 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 17 km || |-id=403 bgcolor=#d6d6d6 | 53403 || 1999 KM || — || May 16, 1999 || Catalina || CSS || — || align=right | 11 km || |-id=404 bgcolor=#E9E9E9 | 53404 || 1999 KX || — || May 17, 1999 || Catalina || CSS || — || align=right | 4.5 km || |-id=405 bgcolor=#d6d6d6 | 53405 || || — || May 18, 1999 || Socorro || LINEAR || — || align=right | 4.7 km || |-id=406 bgcolor=#d6d6d6 | 53406 || || — || May 18, 1999 || Socorro || LINEAR || THM || align=right | 7.2 km || |-id=407 bgcolor=#d6d6d6 | 53407 || || — || May 18, 1999 || Socorro || LINEAR || EOS || align=right | 6.1 km || |-id=408 bgcolor=#d6d6d6 | 53408 || || — || June 7, 1999 || Kitt Peak || Spacewatch || ALA || align=right | 6.8 km || |-id=409 bgcolor=#FFC2E0 | 53409 || ||