Our current knowledge of the dynamical structure of the Kuiper Belt is
reviewed here. Numerical results on long term orbital evolution and dynamical
mechanisms underlying the transport of objects out of the Kuiper Belt are
discussed. Scenarios about the origin of the highly non-uniform orbital
distribution of Kuiper Belt objects are described, as well as the constraints
these provide on the formation and long term dynamical evolution of the outer
Solar system. Possible mechanisms include an early history of orbital migration
of the outer planets, a mass loss phase in the outer Solar system and
scattering by large planetesimals. The origin and dynamics of the scattered
component of the Kuiper Belt is discussed. Inferences about the primordial mass
distribution in the trans-Neptune region are reviewed. Outstanding questions
about Kuiper Belt dynamics are listed.Comment: 22 pages plus 8 figures added footnote, figure
