|| — || align=right | 2.3 km || |-id=017 bgcolor=#FA8072 | 100017 || || — || October 3, 1989 || Cerro Tololo || S. J. Bus || — || align=right | 1.4 km || |-id=018 bgcolor=#fefefe | 100018 || || — || October 7, 1989 || La Silla || E. W. Elst || NYS || align=right | 1.3 km || |-id=019 bgcolor=#E9E9E9 | 100019 Gregorianik || || || October 23, 1989 || Tautenburg Observatory || F. Börngen || — || align=right | 2.2 km || |-id=020 bgcolor=#fefefe | 100020 || || — || August 23, 1990 || Palomar || H. E. Holt || FLO || align=right | 3.6 km || |-id=021 bgcolor=#fefefe | 100021 || || — || August 16, 1990 || La Silla || E. W. Elst || MAS || align=right | 2.1 km || |-id=022 bgcolor=#fefefe | 100022 || || — || September 22, 1990 || La Silla || E. W. Elst || — || align=right | 1.5 km || |-id=023 bgcolor=#E9E9E9 | 100023 || || — || September 22, 1990 || La Silla || E. W. Elst || — || align=right | 2.0 km || |-id=024 bgcolor=#E9E9E9 | 100024 || || — || September 22, 1990 || La Silla || E. W. Elst || — || align=right | 2.2 km || |-id=025 bgcolor=#fefefe | 100025 || || — || September 22, 1990 || La Silla || E. W. Elst || V || align=right | 1.8 km || |-id=026 bgcolor=#fefefe | 100026 || || — || September 22, 1990 || La Silla || E. W. Elst || NYS || align=right | 1.8 km || |-id=027 bgcolor=#fefefe | 100027 Hannaharendt || || || October 12, 1990 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || NYS || align=right | 1.4 km || |-id=028 bgcolor=#d6d6d6 | 100028 von Canstein || || || October 10, 1990 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || — || align=right | 6.2 km || |-id=029 bgcolor=#d6d6d6 | 100029 Varnhagen || || || October 10, 1990 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || — || align=right | 5.6 km || |-id=030 bgcolor=#d6d6d6 | 100030 || || — || November 18, 1990 || La Silla || E. W. Elst || — || align=right | 4.2 km || |-id=031 bgcolor=#d6d6d6 | 100031 || || — || March 20, 1991 || La Silla || H. Debehogne || — || align=right | 5.5