Scattered Kuiper Belt Objects
Objects in eccentric orbits (up to 0.8) having perihelia beyond 30 AU. They
also tend to be inclined to the ecliptic by several 10s of degrees. Their
defining characteristic is that gravitational perturbations from
Neptune, at perihelion, seem sufficient to have pumped up the
eccentricities to the observed large values (hence the term "scattered"). They are not protected
from Neptune, in general, and this is a population that appears
to be leaking away over the age of the Solar system.
They are also known as "scattered disk objects", although this is a
poor term because their large inclinations do not much resemble a disk.
The first recognised example was
1996 TL66 (eccentricity = 0.6,
perihelion distance = 35 AU, diameter = 600 km).
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Kuiper Belt
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