| 2.5 km || |-id=514 bgcolor=#E9E9E9 | 12514 Schommer || || || April 20, 1998 || Kitt Peak || Spacewatch || — || align=right | 4.1 km || |-id=515 bgcolor=#fefefe | 12515 Suiseki || || || April 30, 1998 || Kitt Peak || Spacewatch || — || align=right | 3.9 km || |-id=516 bgcolor=#fefefe | 12516 || || — || April 20, 1998 || Socorro || LINEAR || — || align=right | 2.9 km || |-id=517 bgcolor=#fefefe | 12517 Grayzeck || || || April 30, 1998 || Anderson Mesa || LONEOS || EUT || align=right | 1.6 km || |-id=518 bgcolor=#fefefe | 12518 || || — || April 27, 1998 || Woomera || F. B. Zoltowski || FLO || align=right | 4.5 km || |-id=519 bgcolor=#fefefe | 12519 Pullen || || || April 21, 1998 || Socorro || LINEAR || NYS || align=right | 2.5 km || |-id=520 bgcolor=#FA8072 | 12520 || || — || April 21, 1998 || Socorro || LINEAR || — || align=right | 3.5 km || |-id=521 bgcolor=#fefefe | 12521 || || — || April 21, 1998 || Socorro || LINEAR || NYS || align=right | 5.3 km || |-id=522 bgcolor=#fefefe | 12522 Rara || || || April 21, 1998 || Socorro || LINEAR || — || align=right | 2.9 km || |-id=523 bgcolor=#fefefe | 12523 || || — || April 21, 1998 || Socorro || LINEAR || fast? || align=right | 6.5 km || |-id=524 bgcolor=#fefefe | 12524 Conscience || || || April 25, 1998 || La Silla || E. W. Elst || — || align=right | 2.6 km || |-id=525 bgcolor=#E9E9E9 | 12525 || || — || April 23, 1998 || Socorro || LINEAR || — || align=right | 4.9 km || |-id=526 bgcolor=#fefefe | 12526 de Coninck || || || April 25, 1998 || La Silla || E. W. Elst || — || align=right | 2.3 km || |-id=527 bgcolor=#fefefe | 12527 Anneraugh || || || May 1, 1998 || Anderson Mesa || LONEOS || — || align=right | 6.3 km || |-id=528 bgcolor=#E9E9E9 | 12528 || || — || May 22, 1998 || Socorro || LINEAR || EUN || align=right | 6.7 km || |-id=529 bgcolor=#fefefe | 12529 Reighard || || || May 22, 1998 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=530 bgcolor=#E9E9E9 | 12530 Richardson || || || May 22, 1998 || Socorro || LINEAR