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Bruce Murray Space Image Library

Every round object in the solar system under 10,000 kilometers in diameter, to scale (2014 version, update available)

Every round object in the solar system under 10,000 kilometers in diameter, to scale (2014 version, update available)
Every round object in the solar system under 10,000 kilometers in diameter, to scale (2014 version, update available) Under a size cutoff of 10,000 kilometers, there are two planets, 18 or 19 moons, a few asteroids (perhaps only one of which is actually "round"), and approximately 80 trans-Neptunian objects, most of which do not yet have names. All are shown to scale, keeping in mind that for most of the trans-Neptunian objects, their sizes are only approximately known. Montage by Emily Lakdawalla. Data from NASA / JPL and SSI, processed by Gordan Ugarkovic, Ted Stryk, Bjorn Jonsson, and Emily Lakdawalla.

This graphic has been updated. A version including Pluto, Charon, and Ceres is available here.

Estimated sizes for Kuiper belt objects from Mike Brown's "How many dwarf planets are there in the outer solar system?" page, retrieved on March 5, 2014.