5, 1991 || Kitami || A. Takahashi, K. Watanabe || HYG || align=right | 14 km || |-id=645 bgcolor=#d6d6d6 | 6645 Arcetri || || || January 11, 1991 || Palomar || E. F. Helin || THM || align=right | 12 km || |-id=646 bgcolor=#fefefe | 6646 Churanta || || || February 14, 1991 || Palomar || E. F. Helin || H || align=right | 1.9 km || |-id=647 bgcolor=#fefefe | 6647 Josse || || || April 8, 1991 || La Silla || E. W. Elst || — || align=right | 6.5 km || |-id=648 bgcolor=#E9E9E9 | 6648 || || — || August 9, 1991 || Palomar || H. E. Holt || — || align=right | 6.3 km || |-id=649 bgcolor=#E9E9E9 | 6649 Yokotatakao || 1991 RN || || September 5, 1991 || Yakiimo || A. Natori, T. Urata || — || align=right | 7.4 km || |-id=650 bgcolor=#E9E9E9 | 6650 Morimoto || || || September 7, 1991 || Kitami || K. Endate, K. Watanabe || — || align=right | 7.5 km || |-id=651 bgcolor=#fefefe | 6651 Rogervenable || || || September 10, 1991 || Palomar || H. E. Holt || — || align=right | 4.9 km || |-id=652 bgcolor=#E9E9E9 | 6652 || || — || September 16, 1991 || Palomar || H. E. Holt || — || align=right | 7.9 km || |-id=653 bgcolor=#d6d6d6 | 6653 Feininger || || || December 10, 1991 || Tautenburg Observatory || F. Börngen || KOR || align=right | 6.2 km || |-id=654 bgcolor=#d6d6d6 | 6654 Luleå || || || February 29, 1992 || La Silla || UESAC || HYG || align=right | 12 km || |-id=655 bgcolor=#d6d6d6 | 6655 Nagahama || || || March 8, 1992 || Dynic || A. Sugie || EOS || align=right | 16 km || |-id=656 bgcolor=#d6d6d6 | 6656 Yokota || 1992 FF || || March 23, 1992 || Kitami || K. Endate, K. Watanabe || THM || align=right | 19 km || |-id=657 bgcolor=#fefefe | 6657 Otukyo || 1992 WY || || November 17, 1992 || Dynic || A. Sugie || — || align=right | 2.7 km || |-id=658 bgcolor=#fefefe | 6658 Akiraabe || || || November 18, 1992 || Kitami || K. Endate, K. Watanabe || — || align=right | 6.1 km || |-id=659 bgcolor=#fefefe | 6659 Pietsch || 1992 YN || || December 24, 1992 || Oohira || T. Urata || V || align=right | 5.5 km