|| TIR || align=right | 5.7 km || |-id=308 bgcolor=#fefefe | 56308 || || — || September 9, 1999 || Socorro || LINEAR || FLO || align=right | 2.4 km || |-id=309 bgcolor=#fefefe | 56309 || || — || September 9, 1999 || Socorro || LINEAR || — || align=right | 2.0 km || |-id=310 bgcolor=#E9E9E9 | 56310 || || — || September 9, 1999 || Socorro || LINEAR || — || align=right | 5.1 km || |-id=311 bgcolor=#fefefe | 56311 || || — || September 5, 1999 || Anderson Mesa || LONEOS || — || align=right | 1.4 km || |-id=312 bgcolor=#d6d6d6 | 56312 || || — || September 7, 1999 || Anderson Mesa || LONEOS || — || align=right | 11 km || |-id=313 bgcolor=#d6d6d6 | 56313 || || — || September 29, 1999 || Catalina || CSS || EUP || align=right | 9.6 km || |-id=314 bgcolor=#d6d6d6 | 56314 || || — || October 2, 1999 || Socorro || LINEAR || — || align=right | 9.3 km || |-id=315 bgcolor=#E9E9E9 | 56315 || || — || October 4, 1999 || Socorro || LINEAR || VIB || align=right | 4.1 km || |-id=316 bgcolor=#fefefe | 56316 || || — || October 4, 1999 || Catalina || CSS || — || align=right | 2.2 km || |-id=317 bgcolor=#d6d6d6 | 56317 || || — || October 5, 1999 || Anderson Mesa || LONEOS || — || align=right | 6.2 km || |-id=318 bgcolor=#fefefe | 56318 || || — || October 20, 1999 || La Silla || T. Kranz, C. Wolf || H || align=right | 2.3 km || |-id=319 bgcolor=#fefefe | 56319 || || — || October 31, 1999 || Socorro || LINEAR || H || align=right | 1.6 km || |-id=320 bgcolor=#fefefe | 56320 || || — || November 3, 1999 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=321 bgcolor=#fefefe | 56321 || || — || November 3, 1999 || Socorro || LINEAR || H || align=right | 3.1 km || |-id=322 bgcolor=#fefefe | 56322 || || — || November 4, 1999 || Socorro || LINEAR || NYS || align=right | 1.5 km || |-id=323 bgcolor=#d6d6d6 | 56323 || || — || November 5, 1999 || Socorro || LINEAR || — || align=right | 13 km || |-id=324 bgcolor=#d6d6d6 | 56324 || || — || November 2, 1999 || Catalina || CSS || —