| 44508 || || — || December 14, 1998 || Socorro || LINEAR || HYG || align=right | 8.6 km || |-id=509 bgcolor=#d6d6d6 | 44509 || || — || December 14, 1998 || Socorro || LINEAR || MEL || align=right | 12 km || |-id=510 bgcolor=#d6d6d6 | 44510 || || — || December 14, 1998 || Socorro || LINEAR || EOS || align=right | 7.4 km || |-id=511 bgcolor=#d6d6d6 | 44511 || || — || December 14, 1998 || Socorro || LINEAR || — || align=right | 15 km || |-id=512 bgcolor=#E9E9E9 | 44512 || || — || December 15, 1998 || Socorro || LINEAR || CLO || align=right | 6.8 km || |-id=513 bgcolor=#d6d6d6 | 44513 || || — || December 12, 1998 || Socorro || LINEAR || — || align=right | 15 km || |-id=514 bgcolor=#E9E9E9 | 44514 || || — || December 14, 1998 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=515 bgcolor=#d6d6d6 | 44515 || || — || December 14, 1998 || Socorro || LINEAR || — || align=right | 12 km || |-id=516 bgcolor=#d6d6d6 | 44516 || || — || December 15, 1998 || Socorro || LINEAR || — || align=right | 5.2 km || |-id=517 bgcolor=#d6d6d6 | 44517 || || — || December 15, 1998 || Socorro || LINEAR || — || align=right | 4.6 km || |-id=518 bgcolor=#d6d6d6 | 44518 || || — || December 15, 1998 || Socorro || LINEAR || EOS || align=right | 6.0 km || |-id=519 bgcolor=#d6d6d6 | 44519 || || — || December 15, 1998 || Socorro || LINEAR || TIR || align=right | 12 km || |-id=520 bgcolor=#d6d6d6 | 44520 || || — || December 15, 1998 || Socorro || LINEAR || — || align=right | 8.1 km || |-id=521 bgcolor=#E9E9E9 | 44521 || || — || December 15, 1998 || Socorro || LINEAR || — || align=right | 7.5 km || |-id=522 bgcolor=#fefefe | 44522 || || — || December 16, 1998 || Višnjan Observatory || K. Korlević || — || align=right | 2.5 km || |-id=523 bgcolor=#E9E9E9 | 44523 || || — || December 16, 1998 || Višnjan Observatory || K. Korlević || GEF || align=right | 3.2 km || |-id=524 bgcolor=#d6d6d6 | 44524 || || — || December 19, 1998 || Oizumi || T. Kobayashi || — || align=right | 12 km || |-id=525 bgcolor=#d6d6d6 | 44525 || ||