migr060.html

The Kuiper Belt
The Nice Model also helps solve the so-called Missing Mass Problem in the Kuiper belt:

The observed Kuiper belt objects are big:

	....	....	.......	.......	....	..........	....	...	....	...	.... + many others
2003 UB₃₁₃	....	.... Pluto ₂₅	.....	2005 FY₉	....	2003 EL₆₁	....	Sedna ₂	....	Orcus ₂	....

We need >10M_E in 30-50AU for them to grow (Stern; Stern & Colwell; Kenyon & Luu).
........................
But, there is only <~0.1M_E of material there now! (Trujillo & Brown; Bernstein et al.)