Sedna never comes
close enough to be affected by the Sun, but it never goes far enough
away to be affected by other stars, which is the case with comets
that have been observed in the Kuiper Belt.
The Kuiper Belt is a disk-shaped region between
Neptune and Pluto, between 30 and 50 AU from the Sun. It contains
many small icy bodies and is considered to be the source of short-period