| 177631 || || — || May 15, 2004 || Socorro || LINEAR || — || align=right | 1.5 km || |-id=632 bgcolor=#d6d6d6 | 177632 || || — || May 13, 2004 || Kitt Peak || Spacewatch || — || align=right | 3.7 km || |-id=633 bgcolor=#E9E9E9 | 177633 || || — || May 10, 2004 || Kitt Peak || Spacewatch || HOF || align=right | 4.2 km || |-id=634 bgcolor=#d6d6d6 | 177634 || || — || May 16, 2004 || Siding Spring || SSS || — || align=right | 3.3 km || |-id=635 bgcolor=#d6d6d6 | 177635 || || — || June 11, 2004 || Palomar || NEAT || — || align=right | 5.6 km || |-id=636 bgcolor=#E9E9E9 | 177636 || || — || June 13, 2004 || Socorro || LINEAR || — || align=right | 4.6 km || |-id=637 bgcolor=#E9E9E9 | 177637 || || — || June 11, 2004 || Socorro || LINEAR || EUN || align=right | 2.5 km || |-id=638 bgcolor=#d6d6d6 | 177638 || || — || June 13, 2004 || Kitt Peak || Spacewatch || EOS || align=right | 5.4 km || |-id=639 bgcolor=#d6d6d6 | 177639 || || — || June 14, 2004 || Kitt Peak || Spacewatch || — || align=right | 4.3 km || |-id=640 bgcolor=#d6d6d6 | 177640 || || — || July 10, 2004 || Catalina || CSS || HIL3:2 || align=right | 12 km || |-id=641 bgcolor=#d6d6d6 | 177641 || || — || July 14, 2004 || Socorro || LINEAR || HYG || align=right | 3.2 km || |-id=642 bgcolor=#d6d6d6 | 177642 || || — || July 11, 2004 || Socorro || LINEAR || — || align=right | 6.4 km || |-id=643 bgcolor=#d6d6d6 | 177643 || || — || July 16, 2004 || Socorro || LINEAR || — || align=right | 4.7 km || |-id=644 bgcolor=#d6d6d6 | 177644 || || — || August 11, 2004 || Palomar || NEAT || EUP || align=right | 6.7 km || |-id=645 bgcolor=#d6d6d6 | 177645 || || — || August 9, 2004 || Campo Imperatore || CINEOS || — || align=right | 3.3 km || |-id=646 bgcolor=#d6d6d6 | 177646 || || — || September 8, 2004 || Socorro || LINEAR || — || align=right | 4.6 km || |-id=647 bgcolor=#fefefe | 177647 || || — || September 6, 2004 || Socorro || LINEAR || H || align=right data-sort-value="0.99" | 990 m || |-id=648 bgcolor=#d6d6d6 | 177648