List of unnumbered minor planets: 2004 R (300–619)

The list of unnumbered minor planets, including those designated as 2004 R, refers to a catalog of small celestial bodies (minor planets) that have been discovered but have not yet been assigned a permanent number. These objects are typically given provisional designations based on the year of discovery and a sequential identifier. The specific range "300–619" likely refers to a classification or grouping of these minor planets based on their discovery or observational data.