LONEOS || — || align=right | 1.1 km || |-id=581 bgcolor=#fefefe | 149581 || || — || January 27, 2004 || Kitt Peak || Spacewatch || — || align=right | 1.3 km || |-id=582 bgcolor=#fefefe | 149582 || || — || January 24, 2004 || Socorro || LINEAR || NYS || align=right data-sort-value="0.84" | 840 m || |-id=583 bgcolor=#fefefe | 149583 || || — || January 24, 2004 || Socorro || LINEAR || NYS || align=right data-sort-value="0.96" | 960 m || |-id=584 bgcolor=#E9E9E9 | 149584 || || — || January 28, 2004 || Catalina || CSS || — || align=right | 1.4 km || |-id=585 bgcolor=#fefefe | 149585 || || — || January 24, 2004 || Socorro || LINEAR || — || align=right | 1.2 km || |-id=586 bgcolor=#fefefe | 149586 || || — || February 10, 2004 || Catalina || CSS || V || align=right data-sort-value="0.93" | 930 m || |-id=587 bgcolor=#E9E9E9 | 149587 || || — || February 11, 2004 || Kitt Peak || Spacewatch || EUN || align=right | 1.9 km || |-id=588 bgcolor=#E9E9E9 | 149588 || || — || February 12, 2004 || Kitt Peak || Spacewatch || — || align=right | 1.5 km || |-id=589 bgcolor=#fefefe | 149589 || || — || February 11, 2004 || Kitt Peak || Spacewatch || — || align=right | 1.2 km || |-id=590 bgcolor=#fefefe | 149590 || || — || February 12, 2004 || Desert Eagle || W. K. Y. Yeung || FLO || align=right | 1.2 km || |-id=591 bgcolor=#fefefe | 149591 || || — || February 13, 2004 || Desert Eagle || W. K. Y. Yeung || V || align=right | 1.2 km || |-id=592 bgcolor=#FA8072 | 149592 || || — || February 11, 2004 || Palomar || NEAT || — || align=right | 1.8 km || |-id=593 bgcolor=#fefefe | 149593 || || — || February 11, 2004 || Palomar || NEAT || — || align=right | 1.3 km || |-id=594 bgcolor=#E9E9E9 | 149594 || || — || February 11, 2004 || Palomar || NEAT || — || align=right | 2.8 km || |-id=595 bgcolor=#fefefe | 149595 || || — || February 14, 2004 || Kitt Peak || Spacewatch || NYS || align=right | 1.3 km || |-id=596 bgcolor=#E9E9E9 | 149596 || || — || February 14, 2004 || Kitt Peak || Spacewatch || — || align=right | 3.0 km || |-id=597 bgcolor=#fefefe | 149597 || ||