|| — || January 9, 1999 || Kitt Peak || Spacewatch || NYS || align=right | 1.4 km || |-id=223 bgcolor=#fefefe | 91223 || || — || January 13, 1999 || Kitt Peak || Spacewatch || MAS || align=right | 1.6 km || |-id=224 bgcolor=#fefefe | 91224 || 1999 BH || — || January 16, 1999 || Oizumi || T. Kobayashi || — || align=right | 1.7 km || |-id=225 bgcolor=#fefefe | 91225 || || — || January 20, 1999 || Kleť || Kleť Obs. || NYS || align=right | 4.6 km || |-id=226 bgcolor=#fefefe | 91226 || || — || January 22, 1999 || Kleť || Kleť Obs. || NYS || align=right | 1.7 km || |-id=227 bgcolor=#FA8072 | 91227 || || — || January 22, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 1.6 km || |-id=228 bgcolor=#fefefe | 91228 || || — || January 24, 1999 || Višnjan Observatory || K. Korlević || FLO || align=right | 2.0 km || |-id=229 bgcolor=#fefefe | 91229 || || — || January 26, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 6.2 km || |-id=230 bgcolor=#fefefe | 91230 || || — || January 16, 1999 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=231 bgcolor=#fefefe | 91231 || || — || January 18, 1999 || Socorro || LINEAR || — || align=right | 2.6 km || |-id=232 bgcolor=#fefefe | 91232 || || — || January 18, 1999 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=233 bgcolor=#fefefe | 91233 || || — || February 6, 1999 || Dynic || Y. Ikari || — || align=right | 1.8 km || |-id=234 bgcolor=#fefefe | 91234 || || — || February 7, 1999 || Oizumi || T. Kobayashi || — || align=right | 2.2 km || |-id=235 bgcolor=#fefefe | 91235 || || — || February 7, 1999 || Oizumi || T. Kobayashi || — || align=right | 2.7 km || |-id=236 bgcolor=#fefefe | 91236 || || — || February 6, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 3.8 km || |-id=237 bgcolor=#fefefe | 91237 || || — || February 10, 1999 || Socorro || LINEAR || — || align=right | 3.4 km || |-id=238 bgcolor=#fefefe | 91238 || || — || February 13, 1999 || Socorro || LINEAR || — || align=right