|| KOR || align=right | 4.5 km || |-id=502 bgcolor=#C2FFFF | 15502 || || — || July 14, 1999 || Socorro || LINEAR || L5 || align=right | 53 km || |-id=503 bgcolor=#E9E9E9 | 15503 || || — || September 7, 1999 || Socorro || LINEAR || — || align=right | 9.6 km || |-id=504 bgcolor=#C7FF8F | 15504 || || — || September 4, 1999 || Catalina || CSS || damocloidunusualcritical || align=right | 17 km || |-id=505 bgcolor=#d6d6d6 | 15505 || || — || September 7, 1999 || Socorro || LINEAR || HIL3:2 || align=right | 25 km || |-id=506 bgcolor=#fefefe | 15506 Preygel || || || September 9, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=507 bgcolor=#fefefe | 15507 Rengarajan || || || September 9, 1999 || Socorro || LINEAR || — || align=right | 7.9 km || |-id=508 bgcolor=#d6d6d6 | 15508 || || — || October 1, 1999 || Catalina || CSS || — || align=right | 3.1 km || |-id=509 bgcolor=#E9E9E9 | 15509 || || — || October 4, 1999 || Socorro || LINEAR || — || align=right | 4.6 km || |-id=510 bgcolor=#fefefe | 15510 Phoeberounds || || || October 4, 1999 || Socorro || LINEAR || — || align=right | 5.2 km || |-id=511 bgcolor=#E9E9E9 | 15511 || || — || October 12, 1999 || Socorro || LINEAR || — || align=right | 5.8 km || |-id=512 bgcolor=#d6d6d6 | 15512 Snyder || || || October 18, 1999 || Junk Bond || J. Medkeff, D. Healy || — || align=right | 20 km || |-id=513 bgcolor=#fefefe | 15513 Emmermann || || || October 29, 1999 || Anderson Mesa || LONEOS || — || align=right | 3.6 km || |-id=514 bgcolor=#d6d6d6 | 15514 || || — || November 13, 1999 || Oizumi || T. Kobayashi || — || align=right | 25 km || |-id=515 bgcolor=#d6d6d6 | 15515 || || — || November 4, 1999 || Socorro || LINEAR || — || align=right | 10 km || |-id=516 bgcolor=#E9E9E9 | 15516 || || — || November 5, 1999 || Socorro || LINEAR || EUN || align=right | 5.0 km || |-id=517 bgcolor=#E9E9E9 | 15517 || || — || November 4, 1999 || Catalina || CSS || DOR || align=right | 9.4 km || |-id=518 bgcolor=#E9E9E9 | 15518 || || — || November 10, 1999 || Catalina || CSS || DOR ||