align=right | 4.9 km || |-id=850 bgcolor=#fefefe | 9850 Ralphcopeland || || || October 9, 1990 || Siding Spring || R. H. McNaught || V || align=right | 3.2 km || |-id=851 bgcolor=#E9E9E9 | 9851 Sakamoto || || || October 24, 1990 || Kitami || K. Endate, K. Watanabe || — || align=right | 5.3 km || |-id=852 bgcolor=#E9E9E9 | 9852 Gora || 1990 YX || || December 24, 1990 || Geisei || T. Seki || — || align=right | 3.7 km || |-id=853 bgcolor=#E9E9E9 | 9853 l'Épée || || || January 7, 1991 || Siding Spring || R. H. McNaught || — || align=right | 12 km || |-id=854 bgcolor=#E9E9E9 | 9854 Karlheinz || || || January 15, 1991 || Tautenburg Observatory || F. Börngen || — || align=right | 5.2 km || |-id=855 bgcolor=#E9E9E9 | 9855 Thomasdick || 1991 CU || || February 7, 1991 || Siding Spring || R. H. McNaught || — || align=right | 6.4 km || |-id=856 bgcolor=#FFC2E0 | 9856 || 1991 EE || — || March 13, 1991 || Kitt Peak || Spacewatch || APO +1kmPHA || align=right | 1.0 km || |-id=857 bgcolor=#C2FFFF | 9857 Hecamede || 1991 EN || || March 10, 1991 || Siding Spring || R. H. McNaught || L4 || align=right | 50 km || |-id=858 bgcolor=#d6d6d6 | 9858 || || — || July 18, 1991 || La Silla || H. Debehogne || THM || align=right | 12 km || |-id=859 bgcolor=#d6d6d6 | 9859 Van Lierde || || || August 3, 1991 || La Silla || E. W. Elst || KOR || align=right | 9.4 km || |-id=860 bgcolor=#d6d6d6 | 9860 Archaeopteryx || || || August 6, 1991 || La Silla || E. W. Elst || VER || align=right | 12 km || |-id=861 bgcolor=#fefefe | 9861 Jahreiss || || || September 9, 1991 || Tautenburg Observatory || L. D. Schmadel, F. Börngen || — || align=right | 2.9 km || |-id=862 bgcolor=#fefefe | 9862 || || — || September 13, 1991 || Palomar || H. E. Holt || — || align=right | 4.4 km || |-id=863 bgcolor=#fefefe | 9863 Reichardt || || || September 13, 1991 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || FLO || align=right | 3.8 km || |-id=864 bgcolor=#d6d6d6 | 9864 || || — || September 13, 1991 || Palomar || H. E. Holt || — || align=right | 13 km