|| — || align=right | 8.2 km || |-id=531 bgcolor=#d6d6d6 | 12531 || || — || May 23, 1998 || Socorro || LINEAR || EOS || align=right | 9.0 km || |-id=532 bgcolor=#d6d6d6 | 12532 || || — || May 23, 1998 || Socorro || LINEAR || TIR || align=right | 6.9 km || |-id=533 bgcolor=#E9E9E9 | 12533 Edmond || 1998 LA || || June 2, 1998 || Zeno || T. Stafford || — || align=right | 3.2 km || |-id=534 bgcolor=#E9E9E9 | 12534 Janhoet || || || June 1, 1998 || La Silla || E. W. Elst || — || align=right | 4.9 km || |-id=535 bgcolor=#E9E9E9 | 12535 || || — || June 24, 1998 || Socorro || LINEAR || — || align=right | 11 km || |-id=536 bgcolor=#d6d6d6 | 12536 || || — || June 24, 1998 || Socorro || LINEAR || — || align=right | 8.7 km || |-id=537 bgcolor=#fefefe | 12537 Kendriddle || || || June 24, 1998 || Socorro || LINEAR || FLO || align=right | 4.7 km || |-id=538 bgcolor=#FFC2E0 | 12538 || 1998 OH || — || July 19, 1998 || Haleakalā || NEAT || APO +1kmPHA || align=right | 1.7 km || |-id=539 bgcolor=#E9E9E9 | 12539 Chaikin || || || July 16, 1998 || Kitt Peak || Spacewatch || NEM || align=right | 8.6 km || |-id=540 bgcolor=#d6d6d6 | 12540 Picander || || || July 26, 1998 || La Silla || E. W. Elst || KOR || align=right | 7.2 km || |-id=541 bgcolor=#d6d6d6 | 12541 Makarska || || || August 15, 1998 || Višnjan Observatory || Višnjan Obs. || — || align=right | 7.9 km || |-id=542 bgcolor=#d6d6d6 | 12542 Laver || || || August 10, 1998 || Reedy Creek || J. Broughton || HYG || align=right | 9.3 km || |-id=543 bgcolor=#fefefe | 12543 || || — || August 23, 1998 || Woomera || F. B. Zoltowski || — || align=right | 5.0 km || |-id=544 bgcolor=#d6d6d6 | 12544 || || — || August 17, 1998 || Socorro || LINEAR || — || align=right | 11 km || |-id=545 bgcolor=#E9E9E9 | 12545 || || — || August 17, 1998 || Socorro || LINEAR || — || align=right | 4.9 km || |-id=546 bgcolor=#d6d6d6 | 12546 || || — || August 17, 1998 || Socorro || LINEAR || THM || align=right | 12 km || |-id=547 bgcolor=#d6d6d6 | 12547 ||