|| October 12, 1999 || Kitt Peak || Spacewatch || — || align=right | 1.2 km || |-id=534 bgcolor=#E9E9E9 | 178534 Mosheelitzur || || || October 13, 1999 || Apache Point || SDSS || — || align=right | 1.8 km || |-id=535 bgcolor=#fefefe | 178535 || 1999 UA || — || October 16, 1999 || Ondřejov || P. Pravec, P. Kušnirák || — || align=right | 1.5 km || |-id=536 bgcolor=#fefefe | 178536 || || — || October 31, 1999 || Socorro || LINEAR || H || align=right | 1.1 km || |-id=537 bgcolor=#fefefe | 178537 || || — || October 29, 1999 || Catalina || CSS || — || align=right | 1.1 km || |-id=538 bgcolor=#d6d6d6 | 178538 || || — || October 30, 1999 || Kitt Peak || Spacewatch || — || align=right | 3.9 km || |-id=539 bgcolor=#fefefe | 178539 || || — || October 31, 1999 || Kitt Peak || Spacewatch || — || align=right | 1.1 km || |-id=540 bgcolor=#fefefe | 178540 || || — || October 16, 1999 || Kitt Peak || Spacewatch || — || align=right | 1.3 km || |-id=541 bgcolor=#d6d6d6 | 178541 || || — || October 31, 1999 || Catalina || CSS || LIX || align=right | 8.2 km || |-id=542 bgcolor=#E9E9E9 | 178542 || || — || October 22, 1999 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=543 bgcolor=#fefefe | 178543 || || — || November 3, 1999 || Heppenheim || Starkenburg Obs. || V || align=right data-sort-value="0.93" | 930 m || |-id=544 bgcolor=#fefefe | 178544 || || — || November 2, 1999 || Kitt Peak || Spacewatch || NYS || align=right data-sort-value="0.93" | 930 m || |-id=545 bgcolor=#E9E9E9 | 178545 || || — || November 10, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 1.6 km || |-id=546 bgcolor=#E9E9E9 | 178546 || || — || November 3, 1999 || Socorro || LINEAR || MAR || align=right | 1.8 km || |-id=547 bgcolor=#fefefe | 178547 || || — || November 11, 1999 || Kitt Peak || Spacewatch || V || align=right data-sort-value="0.92" | 920 m || |-id=548 bgcolor=#fefefe | 178548 || || — || November 4, 1999 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=549 bgcolor=#E9E9E9 | 178549 || || — || November 4, 1999 || Socorro || LINEAR || — || align=right | 2.2