40323 || || — || June 9, 1999 || Socorro || LINEAR || — || align=right | 4.6 km || |-id=324 bgcolor=#FA8072 | 40324 || || — || June 12, 1999 || Kitt Peak || Spacewatch || — || align=right | 2.9 km || |-id=325 bgcolor=#d6d6d6 | 40325 || || — || June 11, 1999 || Catalina || CSS || — || align=right | 8.9 km || |-id=326 bgcolor=#fefefe | 40326 || 1999 MA || — || June 18, 1999 || Prescott || P. G. Comba || — || align=right | 4.1 km || |-id=327 bgcolor=#fefefe | 40327 || 1999 MB || — || June 17, 1999 || Reedy Creek || J. Broughton || V || align=right | 2.0 km || |-id=328 bgcolor=#fefefe | 40328 Dow || 1999 MK || || June 20, 1999 || Junk Bond || D. Healy || — || align=right | 2.4 km || |-id=329 bgcolor=#FFC2E0 | 40329 || 1999 ML || — || June 20, 1999 || Catalina || CSS || AMO +1km || align=right | 1.0 km || |-id=330 bgcolor=#fefefe | 40330 || || — || June 20, 1999 || Anderson Mesa || LONEOS || NYS || align=right | 2.1 km || |-id=331 bgcolor=#fefefe | 40331 || || — || June 17, 1999 || Farpoint || G. Hug, G. Bell || — || align=right | 2.0 km || |-id=332 bgcolor=#E9E9E9 | 40332 || 1999 NK || — || July 6, 1999 || Reedy Creek || J. Broughton || — || align=right | 4.6 km || |-id=333 bgcolor=#E9E9E9 | 40333 || || — || July 12, 1999 || Socorro || LINEAR || — || align=right | 12 km || |-id=334 bgcolor=#fefefe | 40334 || || — || July 11, 1999 || Višnjan Observatory || K. Korlević || NYS || align=right | 2.4 km || |-id=335 bgcolor=#fefefe | 40335 || || — || July 15, 1999 || Višnjan Observatory || K. Korlević || V || align=right | 3.0 km || |-id=336 bgcolor=#fefefe | 40336 || || — || July 13, 1999 || Socorro || LINEAR || V || align=right | 2.2 km || |-id=337 bgcolor=#fefefe | 40337 || || — || July 13, 1999 || Socorro || LINEAR || NYS || align=right | 2.1 km || |-id=338 bgcolor=#fefefe | 40338 || || — || July 13, 1999 || Socorro || LINEAR || NYS || align=right | 2.8 km || |-id=339 bgcolor=#fefefe | 40339 || || —