km || |-id=844 bgcolor=#fefefe | 401844 || || — || November 9, 1999 || Socorro || LINEAR || — || align=right data-sort-value="0.79" | 790 m || |-id=845 bgcolor=#d6d6d6 | 401845 || || — || November 5, 1999 || Kitt Peak || Spacewatch || SHU3:2 || align=right | 4.8 km || |-id=846 bgcolor=#d6d6d6 | 401846 || || — || November 28, 1999 || Kitt Peak || Spacewatch || — || align=right | 3.2 km || |-id=847 bgcolor=#FA8072 | 401847 || || — || November 16, 1999 || Catalina || CSS || — || align=right | 2.3 km || |-id=848 bgcolor=#d6d6d6 | 401848 || || — || November 16, 1999 || Kitt Peak || Spacewatch || Tj (2.96) || align=right | 3.5 km || |-id=849 bgcolor=#d6d6d6 | 401849 || || — || December 7, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=850 bgcolor=#d6d6d6 | 401850 || || — || January 5, 2000 || Socorro || LINEAR || — || align=right | 6.3 km || |-id=851 bgcolor=#fefefe | 401851 || || — || January 3, 2000 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.75" | 750 m || |-id=852 bgcolor=#E9E9E9 | 401852 || || — || December 31, 1999 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.93" | 930 m || |-id=853 bgcolor=#E9E9E9 | 401853 || || — || February 29, 2000 || Socorro || LINEAR || EUN || align=right | 1.2 km || |-id=854 bgcolor=#E9E9E9 | 401854 || || — || March 3, 2000 || Socorro || LINEAR || — || align=right | 2.0 km || |-id=855 bgcolor=#E9E9E9 | 401855 || || — || April 28, 2000 || Anderson Mesa || LONEOS || — || align=right | 2.0 km || |-id=856 bgcolor=#FFC2E0 | 401856 || || — || May 29, 2000 || Socorro || LINEAR || APOPHA || align=right data-sort-value="0.31" | 310 m || |-id=857 bgcolor=#FFC2E0 | 401857 || || — || August 1, 2000 || Socorro || LINEAR || APO +1km || align=right | 4.2 km || |-id=858 bgcolor=#FA8072 | 401858 || || — || August 25, 2000 || Socorro || LINEAR || — || align=right data-sort-value="0.98" | 980 m || |-id=859 bgcolor=#fefefe | 401859 || || — || August 24, 2000 || Socorro || LINEAR || — || align=right | 1.0 km || |-id=860 bgcolor=#fefefe | 401860 || || — || August 26, 2000 || Socorro || LINEAR || —