|| || — || March 21, 2001 || Socorro || LINEAR || — || align=right | 3.8 km || |-id=498 bgcolor=#fefefe | 51498 || || — || March 21, 2001 || Socorro || LINEAR || — || align=right | 2.7 km || |-id=499 bgcolor=#fefefe | 51499 || || — || March 23, 2001 || Socorro || LINEAR || — || align=right | 1.7 km || |-id=500 bgcolor=#fefefe | 51500 || || — || March 24, 2001 || Socorro || LINEAR || — || align=right | 3.9 km || |} 51501–51600 |-bgcolor=#fefefe | 51501 || || — || March 27, 2001 || Desert Beaver || W. K. Y. Yeung || — || align=right | 1.8 km || |-id=502 bgcolor=#fefefe | 51502 || || — || March 21, 2001 || Anderson Mesa || LONEOS || — || align=right | 2.3 km || |-id=503 bgcolor=#E9E9E9 | 51503 || || — || March 21, 2001 || Anderson Mesa || LONEOS || — || align=right | 3.5 km || |-id=504 bgcolor=#E9E9E9 | 51504 || || — || March 21, 2001 || Anderson Mesa || LONEOS || — || align=right | 2.9 km || |-id=505 bgcolor=#fefefe | 51505 || || — || March 27, 2001 || Anderson Mesa || LONEOS || — || align=right | 1.8 km || |-id=506 bgcolor=#E9E9E9 | 51506 || || — || March 26, 2001 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=507 bgcolor=#fefefe | 51507 || || — || March 16, 2001 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=508 bgcolor=#fefefe | 51508 || || — || March 16, 2001 || Kitt Peak || Spacewatch || — || align=right | 1.4 km || |-id=509 bgcolor=#fefefe | 51509 || || — || March 16, 2001 || Socorro || LINEAR || V || align=right | 2.1 km || |-id=510 bgcolor=#fefefe | 51510 || || — || March 16, 2001 || Socorro || LINEAR || — || align=right | 3.3 km || |-id=511 bgcolor=#fefefe | 51511 || || — || March 16, 2001 || Socorro || LINEAR || — || align=right | 2.5 km || |-id=512 bgcolor=#fefefe | 51512 || || — || March 16, 2001 || Socorro || LINEAR || — || align=right | 2.9 km || |-id=513 bgcolor=#fefefe | 51513 || || — || March 16, 2001 || Socorro || LINEAR || — || align=right | 3.2 km || |-id=514 bgcolor=#fefefe |