align=right | 13 km || |-id=850 bgcolor=#fefefe | 12850 Axelmunthe || || || February 6, 1998 || La Silla || E. W. Elst || — || align=right | 4.5 km || |-id=851 bgcolor=#fefefe | 12851 || || — || February 22, 1998 || Haleakalā || NEAT || — || align=right | 2.2 km || |-id=852 bgcolor=#fefefe | 12852 Teply || || || March 20, 1998 || Socorro || LINEAR || — || align=right | 3.8 km || |-id=853 bgcolor=#E9E9E9 | 12853 || || — || March 31, 1998 || Socorro || LINEAR || — || align=right | 5.2 km || |-id=854 bgcolor=#fefefe | 12854 || || — || April 29, 1998 || Haleakalā || NEAT || — || align=right | 2.9 km || |-id=855 bgcolor=#E9E9E9 | 12855 Tewksbury || || || April 20, 1998 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=856 bgcolor=#fefefe | 12856 || || — || April 21, 1998 || Socorro || LINEAR || — || align=right | 4.7 km || |-id=857 bgcolor=#d6d6d6 | 12857 || || — || April 21, 1998 || Socorro || LINEAR || KOR || align=right | 6.6 km || |-id=858 bgcolor=#fefefe | 12858 || || — || May 1, 1998 || Haleakalā || NEAT || — || align=right | 3.0 km || |-id=859 bgcolor=#fefefe | 12859 Marlamoore || || || May 18, 1998 || Anderson Mesa || LONEOS || NYS || align=right | 2.8 km || |-id=860 bgcolor=#fefefe | 12860 Turney || || || May 22, 1998 || Socorro || LINEAR || slow? || align=right | 3.1 km || |-id=861 bgcolor=#E9E9E9 | 12861 Wacker || || || May 22, 1998 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=862 bgcolor=#E9E9E9 | 12862 || || — || May 22, 1998 || Socorro || LINEAR || — || align=right | 2.6 km || |-id=863 bgcolor=#fefefe | 12863 Whitfield || || || May 22, 1998 || Socorro || LINEAR || — || align=right | 3.4 km || |-id=864 bgcolor=#E9E9E9 | 12864 || || — || May 23, 1998 || Socorro || LINEAR || — || align=right | 7.9 km || |-id=865 bgcolor=#d6d6d6 | 12865 || || — || May 23, 1998 || Socorro || LINEAR || EOS || align=right | 8.0 km || |-id=866 bgcolor=#fefefe | 12866 Yanamadala || || || May 22, 1998 || Socorro || LINEAR || NYS || align=right | 2.6 km ||