— || April 12, 2004 || Kitt Peak || Spacewatch || — || align=right | 2.5 km || |-id=598 bgcolor=#E9E9E9 | 177598 || || — || April 12, 2004 || Kitt Peak || Spacewatch || — || align=right | 1.6 km || |-id=599 bgcolor=#E9E9E9 | 177599 || || — || April 14, 2004 || Kitt Peak || Spacewatch || AGN || align=right | 1.5 km || |-id=600 bgcolor=#E9E9E9 | 177600 || || — || April 12, 2004 || Palomar || NEAT || — || align=right | 3.1 km || |} 177601–177700 |-bgcolor=#fefefe | 177601 || || — || April 14, 2004 || Bergisch Gladbach || W. Bickel || — || align=right | 1.2 km || |-id=602 bgcolor=#E9E9E9 | 177602 || || — || April 15, 2004 || Socorro || LINEAR || — || align=right | 4.0 km || |-id=603 bgcolor=#E9E9E9 | 177603 || || — || April 14, 2004 || Anderson Mesa || LONEOS || — || align=right | 3.6 km || |-id=604 bgcolor=#d6d6d6 | 177604 || || — || April 15, 2004 || Siding Spring || SSS || — || align=right | 4.7 km || |-id=605 bgcolor=#E9E9E9 | 177605 || || — || April 9, 2004 || Siding Spring || SSS || — || align=right | 1.7 km || |-id=606 bgcolor=#E9E9E9 | 177606 || || — || April 13, 2004 || Catalina || CSS || — || align=right | 2.2 km || |-id=607 bgcolor=#E9E9E9 | 177607 || || — || April 19, 2004 || Siding Spring || SSS || BRU || align=right | 6.0 km || |-id=608 bgcolor=#E9E9E9 | 177608 || || — || April 16, 2004 || Palomar || NEAT || — || align=right | 3.1 km || |-id=609 bgcolor=#E9E9E9 | 177609 || || — || April 16, 2004 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=610 bgcolor=#E9E9E9 | 177610 || || — || April 17, 2004 || Socorro || LINEAR || — || align=right | 4.4 km || |-id=611 bgcolor=#E9E9E9 | 177611 || || — || April 16, 2004 || Kitt Peak || Spacewatch || AGN || align=right | 1.8 km || |-id=612 bgcolor=#E9E9E9 | 177612 || || — || April 16, 2004 || Socorro || LINEAR || — || align=right | 4.3 km || |-id=613 bgcolor=#d6d6d6 | 177613 || || — || April 16, 2004 || Palomar || NEAT || — || align=right | 4.5 km || |-id=614 bgcolor=#FFC2E0 | 177614