 List of unnumbered minor planets: 2000 U–Y

The "List of unnumbered minor planets: 2000 U–Y" refers to a catalog of minor planets (also known as asteroids) that have been observed and designated with provisional designations starting with the letters U through Y, but have not yet been assigned a permanent minor planet number. When an asteroid is discovered, it is given a provisional designation, which typically includes the year of discovery and a letter/number combination.