12274 || || — || October 19, 1990 || Okutama || T. Hioki, S. Hayakawa || EUN || align=right | 5.7 km || |-id=275 bgcolor=#E9E9E9 | 12275 Marcelgoffin || || || November 15, 1990 || La Silla || E. W. Elst || GEF || align=right | 7.7 km || |-id=276 bgcolor=#E9E9E9 | 12276 IJzer || || || November 18, 1990 || La Silla || E. W. Elst || — || align=right | 5.9 km || |-id=277 bgcolor=#E9E9E9 | 12277 Tajimasatonokai || || || November 17, 1990 || Geisei || T. Seki || EUN || align=right | 5.9 km || |-id=278 bgcolor=#E9E9E9 | 12278 Kisohinoki || || || November 21, 1990 || Kitami || K. Endate, K. Watanabe || — || align=right | 5.4 km || |-id=279 bgcolor=#E9E9E9 | 12279 Laon || || || November 16, 1990 || La Silla || E. W. Elst || GEF || align=right | 7.9 km || |-id=280 bgcolor=#E9E9E9 | 12280 Reims || || || November 16, 1990 || La Silla || E. W. Elst || — || align=right | 4.8 km || |-id=281 bgcolor=#E9E9E9 | 12281 Chaumont || || || November 16, 1990 || La Silla || E. W. Elst || PAD || align=right | 16 km || |-id=282 bgcolor=#E9E9E9 | 12282 Crombecq || || || January 21, 1991 || Haute-Provence || E. W. Elst || — || align=right | 6.6 km || |-id=283 bgcolor=#d6d6d6 | 12283 || 1991 EC || — || March 9, 1991 || Dynic || A. Sugie || YAK || align=right | 14 km || |-id=284 bgcolor=#d6d6d6 | 12284 Pohl || 1991 FP || || March 17, 1991 || Palomar || E. F. Helin || THB || align=right | 11 km || |-id=285 bgcolor=#d6d6d6 | 12285 || || — || March 20, 1991 || La Silla || H. Debehogne || — || align=right | 9.7 km || |-id=286 bgcolor=#fefefe | 12286 Poiseuille || || || April 8, 1991 || La Silla || E. W. Elst || — || align=right | 2.6 km || |-id=287 bgcolor=#d6d6d6 | 12287 Langres || || || April 8, 1991 || La Silla || E. W. Elst || HYG || align=right | 8.0 km || |-id=288 bgcolor=#fefefe | 12288 Verdun || || || April 8, 1991 || La Silla || E. W. Elst || FLO || align=right | 3.4 km || |-id=289 bgcolor=#fefefe | 12289 Carnot || || || April 8, 1991 || La Silla || E.