| 16 km || |-id=850 bgcolor=#E9E9E9 | 17850 || || — || April 20, 1998 || Kitt Peak || Spacewatch || EUN || align=right | 5.0 km || |-id=851 bgcolor=#fefefe | 17851 Kaler || 1998 JK || || May 1, 1998 || Haleakala || NEAT || NYS || align=right | 4.9 km || |-id=852 bgcolor=#fefefe | 17852 || || — || May 1, 1998 || Haleakala || NEAT || — || align=right | 3.9 km || |-id=853 bgcolor=#d6d6d6 | 17853 Ronaldsayer || || || May 1, 1998 || Anderson Mesa || LONEOS || HYG || align=right | 12 km || |-id=854 bgcolor=#d6d6d6 | 17854 || || — || May 5, 1998 || Woomera || F. B. Zoltowski || EOS || align=right | 10 km || |-id=855 bgcolor=#d6d6d6 | 17855 Geffert || 1998 KK || || May 19, 1998 || Starkenburg Observatory || Starkenburg Obs. || — || align=right | 15 km || |-id=856 bgcolor=#E9E9E9 | 17856 Gomes || || || May 18, 1998 || Anderson Mesa || LONEOS || — || align=right | 3.9 km || |-id=857 bgcolor=#E9E9E9 | 17857 Hsieh || || || May 18, 1998 || Anderson Mesa || LONEOS || EUN || align=right | 6.5 km || |-id=858 bgcolor=#fefefe | 17858 Beaugé || || || May 22, 1998 || Anderson Mesa || LONEOS || FLO || align=right | 2.9 km || |-id=859 bgcolor=#d6d6d6 | 17859 Galinaryabova || || || May 22, 1998 || Anderson Mesa || LONEOS || EOS || align=right | 13 km || |-id=860 bgcolor=#fefefe | 17860 Roig || || || May 22, 1998 || Anderson Mesa || LONEOS || FLO || align=right | 3.7 km || |-id=861 bgcolor=#d6d6d6 | 17861 || || — || May 22, 1998 || Socorro || LINEAR || — || align=right | 17 km || |-id=862 bgcolor=#d6d6d6 | 17862 || || — || May 22, 1998 || Socorro || LINEAR || EOS || align=right | 8.7 km || |-id=863 bgcolor=#d6d6d6 | 17863 || || — || May 22, 1998 || Socorro || LINEAR || EOS || align=right | 9.3 km || |-id=864 bgcolor=#d6d6d6 | 17864 || || — || May 22, 1998 || Socorro || LINEAR || EOS || align=right | 10 km || |-id=865 bgcolor=#d6d6d6 | 17865 || || — || May 22, 1998 || Socorro || LINEAR || KOR || align=right | 5.8 km || |-id=866 bgcolor=#d6d6d6 | 17866 || || — || May 22, 1998 || Socorro