April 6, 1999 || Anderson Mesa || LONEOS || — || align=right | 3.1 km || |-id=535 bgcolor=#E9E9E9 | 19535 Rowanatkinson || || || April 24, 1999 || Reedy Creek || J. Broughton || — || align=right | 5.1 km || |-id=536 bgcolor=#fefefe | 19536 || || — || May 10, 1999 || Socorro || LINEAR || PHO || align=right | 2.7 km || |-id=537 bgcolor=#fefefe | 19537 || || — || May 12, 1999 || Socorro || LINEAR || H || align=right | 3.4 km || |-id=538 bgcolor=#fefefe | 19538 || || — || May 13, 1999 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=539 bgcolor=#fefefe | 19539 Anaverdu || || || May 14, 1999 || Ametlla de Mar || J. Nomen || — || align=right | 2.1 km || |-id=540 bgcolor=#fefefe | 19540 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=541 bgcolor=#fefefe | 19541 || || — || May 10, 1999 || Socorro || LINEAR || NYS || align=right | 2.4 km || |-id=542 bgcolor=#fefefe | 19542 Lindperkins || || || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.1 km || |-id=543 bgcolor=#fefefe | 19543 Burgoyne || || || May 10, 1999 || Socorro || LINEAR || FLO || align=right | 2.5 km || |-id=544 bgcolor=#fefefe | 19544 Avramkottke || || || May 10, 1999 || Socorro || LINEAR || NYS || align=right | 3.8 km || |-id=545 bgcolor=#fefefe | 19545 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 4.8 km || |-id=546 bgcolor=#fefefe | 19546 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=547 bgcolor=#fefefe | 19547 Collier || || || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=548 bgcolor=#E9E9E9 | 19548 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 6.3 km || |-id=549 bgcolor=#fefefe | 19549 || || — || May 10, 1999 || Socorro || LINEAR || FLO || align=right | 3.2 km || |-id=550 bgcolor=#fefefe | 19550 Samabates || || || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.7 km || |-id=551 bgcolor=#fefefe | 19551 Peterborden || || || May 10, 1999