NEAT || — || align=right | 3.3 km || |-id=241 bgcolor=#fefefe | 20241 || || — || February 27, 1998 || Caussols || ODAS || — || align=right | 2.7 km || |-id=242 bgcolor=#fefefe | 20242 Sagot || || || February 27, 1998 || Bédoin || P. Antonini || — || align=right | 3.6 km || |-id=243 bgcolor=#fefefe | 20243 Den Bosch || || || February 25, 1998 || La Silla || E. W. Elst || — || align=right | 5.6 km || |-id=244 bgcolor=#fefefe | 20244 || 1998 EF || — || March 1, 1998 || Oizumi || T. Kobayashi || — || align=right | 3.2 km || |-id=245 bgcolor=#fefefe | 20245 || || — || March 1, 1998 || Kitt Peak || Spacewatch || V || align=right | 2.2 km || |-id=246 bgcolor=#fefefe | 20246 Frappa || || || March 1, 1998 || Caussols || ODAS || FLO || align=right | 2.4 km || |-id=247 bgcolor=#fefefe | 20247 || || — || March 2, 1998 || Xinglong || SCAP || V || align=right | 2.6 km || |-id=248 bgcolor=#fefefe | 20248 || || — || March 2, 1998 || Xinglong || SCAP || FLO || align=right | 3.4 km || |-id=249 bgcolor=#fefefe | 20249 || || — || March 1, 1998 || La Silla || E. W. Elst || — || align=right | 2.6 km || |-id=250 bgcolor=#fefefe | 20250 || || — || March 1, 1998 || La Silla || E. W. Elst || — || align=right | 3.0 km || |-id=251 bgcolor=#fefefe | 20251 || || — || March 1, 1998 || La Silla || E. W. Elst || NYS || align=right | 2.3 km || |-id=252 bgcolor=#fefefe | 20252 Eyjafjallajökull || || || March 1, 1998 || La Silla || E. W. Elst || V || align=right | 1.9 km || |-id=253 bgcolor=#fefefe | 20253 || || — || March 1, 1998 || Xinglong || SCAP || — || align=right | 2.5 km || |-id=254 bgcolor=#E9E9E9 | 20254 Úpice || || || March 21, 1998 || Ondřejov || P. Pravec || — || align=right | 3.4 km || |-id=255 bgcolor=#FFC2E0 | 20255 || || — || March 22, 1998 || Socorro || LINEAR || AMO +1km || align=right data-sort-value="0.78" | 780 m || |-id=256 bgcolor=#fefefe | 20256 Adolfneckař || || || March 23, 1998 || Ondřejov || P. Pravec || — || align=right | 2.1