Xena's highly elliptical orbit takes it to the far edges of the Kuiper
Belt. It will take approximately 250 years for Xena to reach its
closest approach to the Sun, and 560 years for it to complete an
orbit. (NOTE: Inner solar system orbits are not visible at this scale.
There are so few objects at the far edges of the Kuiper Belt that
its boundaries are not visible here.)
Space Telescope Science Institute, Graphics Dept.