List By Absolute Magnitude (H)
Because size estimates are often crude and vary widely, it is less arbitrary to list objects by absolute magnitudes than by diameter. Theoretical minimum diameters correspond to a maximum albedo of 1. Eris has a high albedo of 0.8–0.9, and members of the Haumea family are also thought to be bright, and thus close to the theoretical minimum. However, many objects are thought to be dark due to tholins causing a red-sloped reflectance spectrum, and therefore red objects may be substantially larger than the lower limit. Rocky asteroids which are brighter than H=6 but are known to be irregular in shape, such as 3 Juno, are not included.
Read more about this topic: List Of Dwarf Planet Candidates
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