|-id=237 bgcolor=#fefefe | 49237 || || — || September 26, 1998 || Socorro || LINEAR || — || align=right | 3.2 km || |-id=238 bgcolor=#fefefe | 49238 || || — || September 26, 1998 || Socorro || LINEAR || — || align=right | 2.0 km || |-id=239 bgcolor=#E9E9E9 | 49239 || || — || September 18, 1998 || La Silla || E. W. Elst || — || align=right | 8.4 km || |-id=240 bgcolor=#E9E9E9 | 49240 || || — || September 18, 1998 || La Silla || E. W. Elst || — || align=right | 3.5 km || |-id=241 bgcolor=#fefefe | 49241 || || — || October 14, 1998 || Socorro || LINEAR || — || align=right | 7.1 km || |-id=242 bgcolor=#fefefe | 49242 || || — || October 13, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 3.4 km || |-id=243 bgcolor=#E9E9E9 | 49243 || || — || October 13, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 3.8 km || |-id=244 bgcolor=#E9E9E9 | 49244 || || — || October 13, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 3.7 km || |-id=245 bgcolor=#E9E9E9 | 49245 || || — || October 13, 1998 || Višnjan Observatory || K. Korlević || EUN || align=right | 3.9 km || |-id=246 bgcolor=#fefefe | 49246 || || — || October 15, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 7.1 km || |-id=247 bgcolor=#E9E9E9 | 49247 || || — || October 13, 1998 || Ondřejov || L. Kotková || — || align=right | 2.0 km || |-id=248 bgcolor=#fefefe | 49248 || || — || October 13, 1998 || Kitt Peak || Spacewatch || MAS || align=right | 1.9 km || |-id=249 bgcolor=#E9E9E9 | 49249 || || — || October 13, 1998 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=250 bgcolor=#E9E9E9 | 49250 || || — || October 14, 1998 || Kitt Peak || Spacewatch || — || align=right | 2.9 km || |-id=251 bgcolor=#E9E9E9 | 49251 || || — || October 15, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 3.3 km || |-id=252 bgcolor=#E9E9E9 | 49252 || || — || October 14, 1998 || Xinglong || SCAP || — || align=right | 2.0 km || |-id=253 bgcolor=#E9E9E9 | 49253 || || — || October 13,