|-id=347 bgcolor=#fefefe | 18347 || 1989 WU || — || November 20, 1989 || Oohira || Oohira Stn. || — || align=right | 4.0 km || |-id=348 bgcolor=#fefefe | 18348 || || — || January 22, 1990 || Palomar || E. F. Helin || PHO || align=right | 4.7 km || |-id=349 bgcolor=#d6d6d6 | 18349 Dafydd || || || July 25, 1990 || Palomar || H. E. Holt || — || align=right | 11 km || |-id=350 bgcolor=#fefefe | 18350 || || — || August 22, 1990 || Palomar || H. E. Holt || — || align=right | 2.2 km || |-id=351 bgcolor=#E9E9E9 | 18351 || || — || August 29, 1990 || Palomar || H. E. Holt || GEF || align=right | 5.8 km || |-id=352 bgcolor=#E9E9E9 | 18352 || || — || August 16, 1990 || La Silla || E. W. Elst || — || align=right | 7.5 km || |-id=353 bgcolor=#E9E9E9 | 18353 || || — || August 16, 1990 || La Silla || E. W. Elst || — || align=right | 11 km || |-id=354 bgcolor=#d6d6d6 | 18354 || || — || September 15, 1990 || Palomar || H. E. Holt || — || align=right | 7.1 km || |-id=355 bgcolor=#E9E9E9 | 18355 || || — || September 14, 1990 || Palomar || H. E. Holt || — || align=right | 10 km || |-id=356 bgcolor=#d6d6d6 | 18356 || || — || September 16, 1990 || Palomar || H. E. Holt || — || align=right | 9.4 km || |-id=357 bgcolor=#fefefe | 18357 || || — || September 18, 1990 || Palomar || H. E. Holt || FLO || align=right | 2.9 km || |-id=358 bgcolor=#fefefe | 18358 || || — || September 16, 1990 || Palomar || H. E. Holt || FLO || align=right | 3.6 km || |-id=359 bgcolor=#d6d6d6 | 18359 Jakobstaude || || || October 13, 1990 || Tautenburg Observatory || L. D. Schmadel, F. Börngen || KOR || align=right | 3.6 km || |-id=360 bgcolor=#E9E9E9 | 18360 Sachs || || || October 10, 1990 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || — || align=right | 6.5 km || |-id=361 bgcolor=#fefefe | 18361 || || — || November 15, 1990 || La Silla || E. W. Elst || V || align=right | 2.3 km || |-id=362 bgcolor=#d6d6d6 | 18362 || || — || November 15, 1990 || La Silla ||