1990 || La Silla || E. W. Elst || 3:2 || align=right | 16 km || |-id=048 bgcolor=#fefefe | 21048 || || — || September 22, 1990 || La Silla || E. W. Elst || — || align=right | 1.8 km || |-id=049 bgcolor=#fefefe | 21049 || || — || September 17, 1990 || Palomar || H. E. Holt || — || align=right | 5.4 km || |-id=050 bgcolor=#E9E9E9 | 21050 Beck || || || October 10, 1990 || Tautenburg Observatory || L. D. Schmadel, F. Börngen || — || align=right | 3.5 km || |-id=051 bgcolor=#E9E9E9 | 21051 || 1990 UM || — || October 20, 1990 || Oohira || T. Urata || — || align=right | 7.0 km || |-id=052 bgcolor=#E9E9E9 | 21052 || || — || October 16, 1990 || La Silla || E. W. Elst || GEF || align=right | 2.8 km || |-id=053 bgcolor=#E9E9E9 | 21053 || 1990 VE || — || November 10, 1990 || Yakiimo || A. Natori, T. Urata || — || align=right | 5.5 km || |-id=054 bgcolor=#d6d6d6 | 21054 Ojmjakon || || || November 15, 1990 || La Silla || E. W. Elst || EOS || align=right | 11 km || |-id=055 bgcolor=#E9E9E9 | 21055 || 1990 YR || — || December 23, 1990 || Okutama || T. Hioki, S. Hayakawa || — || align=right | 8.3 km || |-id=056 bgcolor=#FA8072 | 21056 || || — || February 14, 1991 || Palomar || E. F. Helin || H || align=right | 3.2 km || |-id=057 bgcolor=#fefefe | 21057 Garikisraelian || || || April 8, 1991 || La Silla || E. W. Elst || V || align=right | 1.8 km || |-id=058 bgcolor=#fefefe | 21058 || || — || April 10, 1991 || La Silla || E. W. Elst || FLO || align=right | 2.1 km || |-id=059 bgcolor=#d6d6d6 | 21059 Penderecki || || || April 9, 1991 || Tautenburg Observatory || F. Börngen || EOS || align=right | 5.8 km || |-id=060 bgcolor=#fefefe | 21060 || 1991 JC || — || May 2, 1991 || Oohira || T. Urata || NYS || align=right | 2.9 km || |-id=061 bgcolor=#fefefe | 21061 || 1991 JD || — || May 3, 1991 || Oohira || T. Urata || NYS || align=right | 3.2 km || |-id=062 bgcolor=#d6d6d6 | 21062 Iasky || || || May 13, 1991 || Palomar || C. S. Shoemaker,