km || |-id=546 bgcolor=#E9E9E9 | 177546 || || — || March 19, 2004 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=547 bgcolor=#E9E9E9 | 177547 || || — || March 20, 2004 || Socorro || LINEAR || — || align=right | 4.0 km || |-id=548 bgcolor=#E9E9E9 | 177548 || || — || March 20, 2004 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=549 bgcolor=#E9E9E9 | 177549 || || — || March 20, 2004 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=550 bgcolor=#E9E9E9 | 177550 || || — || March 16, 2004 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=551 bgcolor=#E9E9E9 | 177551 || || — || March 16, 2004 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=552 bgcolor=#E9E9E9 | 177552 || || — || March 18, 2004 || Palomar || NEAT || — || align=right | 3.8 km || |-id=553 bgcolor=#E9E9E9 | 177553 || || — || March 18, 2004 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=554 bgcolor=#E9E9E9 | 177554 || || — || March 19, 2004 || Palomar || NEAT || MAR || align=right | 1.6 km || |-id=555 bgcolor=#E9E9E9 | 177555 || || — || March 21, 2004 || Kitt Peak || Spacewatch || — || align=right | 3.9 km || |-id=556 bgcolor=#E9E9E9 | 177556 || || — || March 22, 2004 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=557 bgcolor=#E9E9E9 | 177557 || || — || March 23, 2004 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=558 bgcolor=#E9E9E9 | 177558 || || — || March 19, 2004 || Socorro || LINEAR || — || align=right | 3.5 km || |-id=559 bgcolor=#E9E9E9 | 177559 || || — || March 19, 2004 || Socorro || LINEAR || NEM || align=right | 3.6 km || |-id=560 bgcolor=#E9E9E9 | 177560 || || — || March 19, 2004 || Socorro || LINEAR || — || align=right | 2.9 km || |-id=561 bgcolor=#E9E9E9 | 177561 || || — || March 24, 2004 || Siding Spring || SSS || HNS || align=right | 2.1 km || |-id=562 bgcolor=#E9E9E9 | 177562 || || — || March 25, 2004 || Socorro || LINEAR || — || align=right | 2.7 km || |-id=563 bgcolor=#E9E9E9 | 177563