T. Kobayashi || FLO || align=right | 4.3 km || |-id=603 bgcolor=#fefefe | 42603 || || — || January 23, 1998 || Socorro || LINEAR || FLO || align=right | 2.5 km || |-id=604 bgcolor=#fefefe | 42604 || || — || January 24, 1998 || Haleakala || NEAT || FLO || align=right | 3.9 km || |-id=605 bgcolor=#fefefe | 42605 || || — || January 27, 1998 || Kleť || Kleť Obs. || — || align=right | 1.4 km || |-id=606 bgcolor=#fefefe | 42606 || 1998 DD || — || February 16, 1998 || Xinglong || SCAP || — || align=right | 2.9 km || |-id=607 bgcolor=#fefefe | 42607 || || — || February 23, 1998 || Haleakala || NEAT || — || align=right | 3.5 km || |-id=608 bgcolor=#fefefe | 42608 || || — || February 28, 1998 || Oaxaca || J. M. Roe || — || align=right | 2.7 km || |-id=609 bgcolor=#FA8072 | 42609 Daubechies || || || February 27, 1998 || La Silla || E. W. Elst || — || align=right | 3.0 km || |-id=610 bgcolor=#fefefe | 42610 || || — || February 27, 1998 || La Silla || E. W. Elst || NYS || align=right | 1.8 km || |-id=611 bgcolor=#fefefe | 42611 Manchu || || || March 2, 1998 || Caussols || ODAS || NYS || align=right | 1.4 km || |-id=612 bgcolor=#fefefe | 42612 || || — || March 1, 1998 || Kitt Peak || Spacewatch || — || align=right | 2.4 km || |-id=613 bgcolor=#fefefe | 42613 || || — || March 2, 1998 || Kitt Peak || Spacewatch || — || align=right | 1.9 km || |-id=614 bgcolor=#fefefe | 42614 Ubaldina || || || March 2, 1998 || San Marcello || L. Tesi, A. Caronia || — || align=right | 2.2 km || |-id=615 bgcolor=#fefefe | 42615 || || — || March 1, 1998 || La Silla || E. W. Elst || V || align=right | 1.8 km || |-id=616 bgcolor=#fefefe | 42616 || || — || March 3, 1998 || La Silla || E. W. Elst || NYS || align=right | 2.0 km || |-id=617 bgcolor=#fefefe | 42617 || || — || March 20, 1998 || Woomera || F. B. Zoltowski || V || align=right | 1.7 km || |-id=618 bgcolor=#fefefe | 42618 || || — || March 21, 1998 || Kitt Peak || Spacewatch || FLO || align=right