|-id=431 bgcolor=#fefefe | 17431 Sainte-Colombe || 1989 RT || || September 3, 1989 || Haute Provence || E. W. Elst || V || align=right | 4.4 km || |-id=432 bgcolor=#d6d6d6 | 17432 || 1989 SR || — || September 29, 1989 || Kushiro || S. Ueda, H. Kaneda || EOS || align=right | 8.3 km || |-id=433 bgcolor=#d6d6d6 | 17433 || || — || September 26, 1989 || La Silla || E. W. Elst || EOS || align=right | 8.2 km || |-id=434 bgcolor=#d6d6d6 | 17434 || || — || September 26, 1989 || La Silla || E. W. Elst || HYG || align=right | 7.2 km || |-id=435 bgcolor=#FA8072 | 17435 di Giovanni || || || September 26, 1989 || La Silla || E. W. Elst || PHO || align=right | 3.1 km || |-id=436 bgcolor=#fefefe | 17436 || || — || September 26, 1989 || La Silla || E. W. Elst || — || align=right | 2.4 km || |-id=437 bgcolor=#d6d6d6 | 17437 Stekene || || || September 26, 1989 || La Silla || E. W. Elst || ALA || align=right | 14 km || |-id=438 bgcolor=#fefefe | 17438 Quasimodo || || || September 26, 1989 || La Silla || E. W. Elst || NYS || align=right | 5.5 km || |-id=439 bgcolor=#d6d6d6 | 17439 Juliesan || || || October 7, 1989 || La Silla || E. W. Elst || VER || align=right | 8.6 km || |-id=440 bgcolor=#d6d6d6 | 17440 || || — || October 2, 1989 || La Silla || H. Debehogne || — || align=right | 13 km || |-id=441 bgcolor=#fefefe | 17441 || 1989 UE || — || October 20, 1989 || Kani || Y. Mizuno, T. Furuta || NYS || align=right | 3.0 km || |-id=442 bgcolor=#C2FFFF | 17442 || || — || October 30, 1989 || Cerro Tololo || S. J. Bus || L5 || align=right | 23 km || |-id=443 bgcolor=#d6d6d6 | 17443 || || — || October 30, 1989 || Cerro Tololo || S. J. Bus || — || align=right | 12 km || |-id=444 bgcolor=#fefefe | 17444 || || — || November 3, 1989 || La Silla || E. W. Elst || — || align=right | 3.0 km || |-id=445 bgcolor=#d6d6d6 | 17445 Avatcha || || || December 28, 1989 || Haute Provence || E. W. Elst || — || align=right | 20 km || |-id=446 bgcolor=#fefefe | 17446