The Pluto/Neptune anomaly of the Titius-Bode progression is predicted in the Initial Mass Displacements.
Although the total Ceres mass includes an asteroid belt, the total Pluto mass is unique.
Excluding Neptune, a variety of objects between 48.8 AU and 28.8 AU had a total mass of 10 Earth Masses (i.e., PLUTO INITIAL MASS).

FrankHatchiii.com

The Kuiper Belt is the location for "a variety of objects between 48.8 AU and 28.8 AU." http://www.FrankHatchiii.com/page3.html

Best Regards,

Frank Hatch

Eris is from the Initial Displacement of Bmass (i.e., 77.2 AU, Titius-Bode placement).

FrankHatchiii.com