|-id=838 bgcolor=#E9E9E9 | 163838 || || — || September 16, 2003 || Palomar || NEAT || — || align=right | 1.4 km || |-id=839 bgcolor=#fefefe | 163839 || || — || September 16, 2003 || Anderson Mesa || LONEOS || — || align=right | 1.6 km || |-id=840 bgcolor=#E9E9E9 | 163840 || || — || September 16, 2003 || Anderson Mesa || LONEOS || EUN || align=right | 4.1 km || |-id=841 bgcolor=#E9E9E9 | 163841 || || — || September 18, 2003 || Palomar || NEAT || — || align=right | 1.4 km || |-id=842 bgcolor=#E9E9E9 | 163842 || || — || September 16, 2003 || Anderson Mesa || LONEOS || — || align=right | 2.6 km || |-id=843 bgcolor=#E9E9E9 | 163843 || || — || September 16, 2003 || Kitt Peak || Spacewatch || — || align=right | 2.2 km || |-id=844 bgcolor=#fefefe | 163844 || || — || September 16, 2003 || Kitt Peak || Spacewatch || NYS || align=right | 1.3 km || |-id=845 bgcolor=#E9E9E9 | 163845 || || — || September 17, 2003 || Kitt Peak || Spacewatch || — || align=right | 3.3 km || |-id=846 bgcolor=#E9E9E9 | 163846 || || — || September 17, 2003 || Campo Imperatore || CINEOS || — || align=right | 4.5 km || |-id=847 bgcolor=#E9E9E9 | 163847 || || — || September 18, 2003 || Campo Imperatore || CINEOS || — || align=right | 1.2 km || |-id=848 bgcolor=#E9E9E9 | 163848 || || — || September 18, 2003 || Socorro || LINEAR || — || align=right | 1.5 km || |-id=849 bgcolor=#E9E9E9 | 163849 || || — || September 17, 2003 || Kitt Peak || Spacewatch || — || align=right | 2.8 km || |-id=850 bgcolor=#E9E9E9 | 163850 || || — || September 19, 2003 || Kitt Peak || Spacewatch || — || align=right | 1.8 km || |-id=851 bgcolor=#E9E9E9 | 163851 || || — || September 19, 2003 || Kitt Peak || Spacewatch || — || align=right | 2.1 km || |-id=852 bgcolor=#E9E9E9 | 163852 || || — || September 16, 2003 || Anderson Mesa || LONEOS || — || align=right | 3.1 km || |-id=853 bgcolor=#E9E9E9 | 163853 || || — || September 18, 2003 || Kitt Peak || Spacewatch || — || align=right data-sort-value="0.86" | 860 m || |-id=854 bgcolor=#E9E9E9 | 163854 || || — || September 18, 2003 || Palomar || NEAT || HEN ||