Average distances from the Sun are shown.  Pluto's orbit is the most eccentric.
From 1979 to 1999, Pluto was slightly closer to the Sun than Neptune.  It is now
moving away from the Sun again in its 248-year-long orbit.
The Sun is shown at roughly true scale size.  Planets are shown as single pixels,
which are 7 to 450 times larger than correct scale size.  Earth and its Moon are
too close together to show as separate dots: They would be only 1/2 pixel apart.
To my Space and Science home page for more about the Solar System
Jeff Root · December 14, 2002