Feddersen || || || February 6, 2000 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=510 bgcolor=#E9E9E9 | 28510 || || — || February 8, 2000 || Socorro || LINEAR || MAR || align=right | 4.8 km || |-id=511 bgcolor=#fefefe | 28511 Marggraff || || || February 2, 2000 || Socorro || LINEAR || NYS || align=right | 2.2 km || |-id=512 bgcolor=#E9E9E9 | 28512 Tanyuan || || || February 6, 2000 || Socorro || LINEAR || — || align=right | 6.6 km || |-id=513 bgcolor=#fefefe | 28513 Guo || || || February 5, 2000 || Kitt Peak || M. W. Buie || NYS || align=right | 1.4 km || |-id=514 bgcolor=#fefefe | 28514 || || — || February 26, 2000 || Oaxaca || J. M. Roe || — || align=right | 5.6 km || |-id=515 bgcolor=#E9E9E9 | 28515 || || — || February 27, 2000 || Višnjan Observatory || K. Korlević, M. Jurić || — || align=right | 3.5 km || |-id=516 bgcolor=#E9E9E9 | 28516 Möbius || || || February 27, 2000 || Prescott || P. G. Comba || — || align=right | 3.3 km || |-id=517 bgcolor=#fefefe | 28517 || || — || February 29, 2000 || Oizumi || T. Kobayashi || — || align=right | 3.1 km || |-id=518 bgcolor=#fefefe | 28518 || || — || February 29, 2000 || Oizumi || T. Kobayashi || V || align=right | 3.8 km || |-id=519 bgcolor=#fefefe | 28519 Sweetman || || || February 26, 2000 || Catalina || CSS || FLO || align=right | 3.4 km || |-id=520 bgcolor=#fefefe | 28520 || || — || February 29, 2000 || Višnjan Observatory || K. Korlević || FLO || align=right | 3.0 km || |-id=521 bgcolor=#fefefe | 28521 Mattmcintyre || || || February 29, 2000 || Socorro || LINEAR || — || align=right | 3.2 km || |-id=522 bgcolor=#fefefe | 28522 || || — || February 29, 2000 || Socorro || LINEAR || — || align=right | 1.8 km || |-id=523 bgcolor=#d6d6d6 | 28523 || || — || February 29, 2000 || Socorro || LINEAR || THM || align=right | 8.5 km || |-id=524 bgcolor=#fefefe | 28524 Ebright || || || February 29, 2000 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=525 bgcolor=#fefefe | 28525 Andrewabboud || || || February 29, 2000 || Socorro || LINEAR || FLO || align=right | 2.2