Leoncito || Félix Aguilar Obs. || MAR || align=right | 9.5 km || |-id=308 bgcolor=#d6d6d6 | 6308 Ebisuzaki || 1990 BK || || January 17, 1990 || Yatsugatake || Y. Kushida, O. Muramatsu || THM || align=right | 12 km || |-id=309 bgcolor=#d6d6d6 | 6309 Elsschot || || || March 2, 1990 || La Silla || E. W. Elst || EOS || align=right | 11 km || |-id=310 bgcolor=#fefefe | 6310 Jankonke || 1990 KK || || May 21, 1990 || Palomar || E. F. Helin || H || align=right | 3.7 km || |-id=311 bgcolor=#fefefe | 6311 Porubčan || || || September 15, 1990 || Palomar || H. E. Holt || — || align=right | 4.9 km || |-id=312 bgcolor=#fefefe | 6312 Robheinlein || || || September 14, 1990 || Palomar || H. E. Holt || — || align=right | 3.6 km || |-id=313 bgcolor=#fefefe | 6313 Tsurutani || || || September 14, 1990 || La Silla || H. Debehogne || — || align=right | 2.9 km || |-id=314 bgcolor=#fefefe | 6314 Reigber || || || September 17, 1990 || Palomar || H. E. Holt || FLO || align=right | 5.1 km || |-id=315 bgcolor=#fefefe | 6315 Barabash || 1990 TS || || October 11, 1990 || Kushiro || S. Ueda, H. Kaneda || — || align=right | 3.6 km || |-id=316 bgcolor=#fefefe | 6316 Méndez || || || October 9, 1990 || Siding Spring || R. H. McNaught || FLO || align=right | 2.9 km || |-id=317 bgcolor=#fefefe | 6317 Dreyfus || || || October 16, 1990 || La Silla || E. W. Elst || — || align=right | 5.6 km || |-id=318 bgcolor=#FA8072 | 6318 Cronkite || 1990 WA || || November 18, 1990 || Palomar || E. F. Helin || — || align=right | 1.4 km || |-id=319 bgcolor=#fefefe | 6319 Beregovoj || || || November 19, 1990 || La Silla || E. W. Elst || FLO || align=right | 4.6 km || |-id=320 bgcolor=#fefefe | 6320 Bremen || || || January 15, 1991 || Tautenburg Observatory || F. Börngen || NYS || align=right | 10 km || |-id=321 bgcolor=#E9E9E9 | 6321 Namuratakao || 1991 BV || || January 19, 1991 || Dynic || A. Sugie || EUN || align=right | 7.7 km || |-id=322 bgcolor=#FA8072 | 6322 || 1991 CQ || — || February 10, 1991 || Siding Spring || R. H. McNaught || —