List of unnumbered minor planets: 2003 X–Y

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 1–31 December 2003. As of June 2021, a total of 502 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–E · F–G · H–L · M–R · Si · Sii · Siii · Siv · T · Ui · Uii · Uiii · Uiv · V · Wi · Wii and . Also see previous and next year.

List of unnumbered minor planets: 2003 X–Y

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 1–31 December 2003. As of June 2021, a total of 502 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–E · F–G · H–L · M–R · Si · Sii · Siii · Siv · T · Ui · Uii · Uiii · Uiv · V · Wi · Wii and . Also see previous and next year.