| 3.5 km || |-id=517 bgcolor=#fefefe | 31517 Mahoui || || || February 12, 1999 || Socorro || LINEAR || V || align=right | 3.3 km || |-id=518 bgcolor=#E9E9E9 | 31518 || || — || February 12, 1999 || Socorro || LINEAR || EUN || align=right | 4.9 km || |-id=519 bgcolor=#fefefe | 31519 Mimamarquez || || || February 12, 1999 || Socorro || LINEAR || V || align=right | 2.1 km || |-id=520 bgcolor=#E9E9E9 | 31520 || || — || February 12, 1999 || Socorro || LINEAR || — || align=right | 3.2 km || |-id=521 bgcolor=#E9E9E9 | 31521 || || — || February 12, 1999 || Socorro || LINEAR || EUN || align=right | 4.7 km || |-id=522 bgcolor=#fefefe | 31522 McCutchen || || || February 12, 1999 || Socorro || LINEAR || — || align=right | 2.0 km || |-id=523 bgcolor=#E9E9E9 | 31523 Jessemichel || || || February 12, 1999 || Socorro || LINEAR || — || align=right | 3.5 km || |-id=524 bgcolor=#E9E9E9 | 31524 || || — || February 12, 1999 || Socorro || LINEAR || — || align=right | 4.1 km || |-id=525 bgcolor=#fefefe | 31525 Nickmiller || || || February 12, 1999 || Socorro || LINEAR || — || align=right | 3.0 km || |-id=526 bgcolor=#E9E9E9 | 31526 || || — || February 11, 1999 || Socorro || LINEAR || — || align=right | 8.0 km || |-id=527 bgcolor=#E9E9E9 | 31527 || || — || February 11, 1999 || Socorro || LINEAR || — || align=right | 4.4 km || |-id=528 bgcolor=#fefefe | 31528 || || — || February 11, 1999 || Socorro || LINEAR || PHO || align=right | 3.3 km || |-id=529 bgcolor=#E9E9E9 | 31529 || || — || February 11, 1999 || Socorro || LINEAR || HNS || align=right | 5.3 km || |-id=530 bgcolor=#E9E9E9 | 31530 || || — || February 11, 1999 || Socorro || LINEAR || EUN || align=right | 5.1 km || |-id=531 bgcolor=#d6d6d6 | 31531 ARRL || || || February 9, 1999 || Kitt Peak || Spacewatch || — || align=right | 6.5 km || |-id=532 bgcolor=#E9E9E9 | 31532 || || — || February 9, 1999 || Kitt Peak || Spacewatch || — || align=right | 4.7 km || |-id=533 bgcolor=#E9E9E9 | 31533 || || — || February 10, 1999 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=534 bgcolor=#E9E9E9