km || |-id=405 bgcolor=#fefefe | 13405 Dorisbillings || || || September 21, 1999 || Calgary || G. W. Billings || FLO || align=right | 4.1 km || |-id=406 bgcolor=#E9E9E9 | 13406 Sekora || || || October 2, 1999 || Ondřejov || L. Kotková || — || align=right | 10 km || |-id=407 bgcolor=#d6d6d6 | 13407 || || — || October 4, 1999 || JCPM Sapporo || K. Watanabe || — || align=right | 8.4 km || |-id=408 bgcolor=#fefefe | 13408 Deadoklestic || || || October 10, 1999 || Višnjan Observatory || M. Jurić, K. Korlević || NYS || align=right | 6.9 km || |-id=409 bgcolor=#d6d6d6 | 13409 || 1999 US || — || October 16, 1999 || Višnjan Observatory || K. Korlević || — || align=right | 12 km || |-id=410 bgcolor=#fefefe | 13410 Arhale || || || October 29, 1999 || Catalina || CSS || FLO || align=right | 2.7 km || |-id=411 bgcolor=#E9E9E9 | 13411 OLRAP || || || October 31, 1999 || Bédoin || P. Antonini || EUN || align=right | 5.4 km || |-id=412 bgcolor=#d6d6d6 | 13412 Guerrieri || || || October 29, 1999 || Catalina || CSS || KOR || align=right | 4.4 km || |-id=413 bgcolor=#d6d6d6 | 13413 Bobpeterson || || || October 29, 1999 || Catalina || CSS || — || align=right | 5.3 km || |-id=414 bgcolor=#d6d6d6 | 13414 Grantham || || || October 29, 1999 || Catalina || CSS || KOR || align=right | 4.4 km || |-id=415 bgcolor=#fefefe | 13415 Stevenbland || || || October 29, 1999 || Catalina || CSS || NYS || align=right | 2.3 km || |-id=416 bgcolor=#d6d6d6 | 13416 Berryman || || || October 30, 1999 || Catalina || CSS || — || align=right | 14 km || |-id=417 bgcolor=#E9E9E9 | 13417 || || — || November 5, 1999 || Ōizumi || T. Kobayashi || — || align=right | 10 km || |-id=418 bgcolor=#fefefe | 13418 || || — || November 8, 1999 || Višnjan Observatory || K. Korlević || MAS || align=right | 3.8 km || |-id=419 bgcolor=#d6d6d6 | 13419 || || — || November 9, 1999 || Ōizumi || T. Kobayashi || THM || align=right | 9.9 km || |-id=420 bgcolor=#E9E9E9 | 13420 || || — || November 9, 1999 || Ōizumi || T. Kobayashi || — || align=right | 11 km || |-id=421 bgcolor=#E9E9E9 | 13421 Holvorcem || || || November 11, 1999