|| |-id=477 bgcolor=#fefefe | 17477 || || — || April 10, 1991 || La Silla || E. W. Elst || — || align=right | 2.4 km || |-id=478 bgcolor=#E9E9E9 | 17478 || 1991 LQ || — || June 13, 1991 || Palomar || E. F. Helin || EUN || align=right | 5.1 km || |-id=479 bgcolor=#E9E9E9 | 17479 || || — || August 13, 1991 || Palomar || E. F. Helin || — || align=right | 6.4 km || |-id=480 bgcolor=#E9E9E9 | 17480 || || — || August 7, 1991 || Palomar || H. E. Holt || GEF || align=right | 4.3 km || |-id=481 bgcolor=#E9E9E9 | 17481 || || — || August 7, 1991 || Palomar || H. E. Holt || MRX || align=right | 4.3 km || |-id=482 bgcolor=#E9E9E9 | 17482 || || — || August 6, 1991 || Palomar || H. E. Holt || — || align=right | 5.8 km || |-id=483 bgcolor=#fefefe | 17483 || 1991 RA || — || September 2, 1991 || Siding Spring || K. S. Russell || H || align=right | 1.6 km || |-id=484 bgcolor=#E9E9E9 | 17484 Ganghofer || || || September 13, 1991 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || — || align=right | 4.7 km || |-id=485 bgcolor=#E9E9E9 | 17485 || || — || September 5, 1991 || Siding Spring || R. H. McNaught || MAR || align=right | 6.3 km || |-id=486 bgcolor=#E9E9E9 | 17486 Hodler || || || September 10, 1991 || Tautenburg Observatory || F. Börngen || — || align=right | 4.9 km || |-id=487 bgcolor=#E9E9E9 | 17487 || 1991 SY || — || September 30, 1991 || Siding Spring || R. H. McNaught || EUN || align=right | 6.0 km || |-id=488 bgcolor=#E9E9E9 | 17488 Mantl || || || October 2, 1991 || Tautenburg Observatory || L. D. Schmadel, F. Börngen || MRX || align=right | 3.9 km || |-id=489 bgcolor=#E9E9E9 | 17489 Trenker || || || October 2, 1991 || Tautenburg Observatory || F. Börngen, L. D. Schmadel || — || align=right | 3.2 km || |-id=490 bgcolor=#E9E9E9 | 17490 || || — || October 31, 1991 || Kushiro || S. Ueda, H. Kaneda || — || align=right | 6.9 km || |-id=491 bgcolor=#E9E9E9 | 17491 || || — || October 31, 1991 || Kushiro || S. Ueda, H. Kaneda || — || align=right | 10 km || |-id=492 bgcolor=#C2FFFF |