File:SolarSystemSizes.PNG

English: Log-log plot (red-dots) of solar-system object diameters versus "distance from the sun". The diameter of natural satellites (moons) associated with these objects are plotted (as blue-triangles) below them. The plot only includes a few comets (magenta diagonals), which often have unknown diameters and orbits that are highly eccentric (and sometimes well out of the ecliptic).

The plot uses standard planetary symbols, except that C refers to dwarf-planet Ceres while dwarf-planets Haumea, Makemake, Eris and trans-Neptunian object Sedna (far right) are only shown by red dots. Minor planets including the next smaller asteroids Vesta, Pallas and Hygiea are shown as grey dots instead.

Horizontal green, yellow and magenta lines mark the perihelion and aphelion of each object. Yellow lines (for scale) also mark the diameter (hence twice the radius) of the sun along both axes. As you can see, object diameters are generally smaller than that of the sun, while object orbits are generally much larger than the diameter of the sun.