Korlević || ADE || align=right | 7.8 km || |-id=253 bgcolor=#E9E9E9 | 28253 || || — || January 16, 1999 || Socorro || LINEAR || MAR || align=right | 5.0 km || |-id=254 bgcolor=#fefefe | 28254 Raghrama || || || January 16, 1999 || Socorro || LINEAR || — || align=right | 7.0 km || |-id=255 bgcolor=#fefefe | 28255 || || — || January 18, 1999 || Socorro || LINEAR || FLO || align=right | 2.5 km || |-id=256 bgcolor=#fefefe | 28256 || || — || January 18, 1999 || Socorro || LINEAR || V || align=right | 3.9 km || |-id=257 bgcolor=#E9E9E9 | 28257 || || — || January 18, 1999 || Socorro || LINEAR || — || align=right | 14 km || |-id=258 bgcolor=#fefefe | 28258 || || — || January 18, 1999 || Socorro || LINEAR || — || align=right | 3.4 km || |-id=259 bgcolor=#fefefe | 28259 || || — || January 17, 1999 || Kitt Peak || Spacewatch || V || align=right | 2.4 km || |-id=260 bgcolor=#d6d6d6 | 28260 || || — || January 18, 1999 || Kitt Peak || Spacewatch || — || align=right | 8.4 km || |-id=261 bgcolor=#d6d6d6 | 28261 || 1999 CJ || — || February 4, 1999 || Oizumi || T. Kobayashi || EOS || align=right | 9.5 km || |-id=262 bgcolor=#d6d6d6 | 28262 || || — || February 8, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 9.1 km || |-id=263 bgcolor=#E9E9E9 | 28263 || || — || February 8, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 6.5 km || |-id=264 bgcolor=#d6d6d6 | 28264 || || — || February 12, 1999 || Oizumi || T. Kobayashi || EOS || align=right | 6.4 km || |-id=265 bgcolor=#E9E9E9 | 28265 || || — || February 12, 1999 || Oizumi || T. Kobayashi || — || align=right | 6.1 km || |-id=266 bgcolor=#E9E9E9 | 28266 || || — || February 12, 1999 || Oizumi || T. Kobayashi || — || align=right | 4.6 km || |-id=267 bgcolor=#fefefe | 28267 || || — || February 15, 1999 || Oizumi || T. Kobayashi || NYS || align=right | 8.8 km || |-id=268 bgcolor=#fefefe | 28268 || || — || February 8, 1999 || Uenohara || N. Kawasato || — || align=right | 2.9 km || |-id=269 bgcolor=#E9E9E9 | 28269 || || — || February