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Three half-megameter moons

Three half-megameter moons

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NASA / JPL / SSI / processing by Gordan Ugarkovic (Enceladus, Mimas) and Ted Stryk (Miranda). Montage by Emily Lakdawalla.

Three half-megameter moons
Large objects in the solar system are round; small objects are lumpy. Where does round transition to lumpy? In the outer solar system, the transition happens at roughly 500 kilometers, give or take. Enceladus (512 kilometers) is geologically active and very round, while Miranda (472 kilometers) and Mimas (397 kilometers) have noticeable departures from roundness.

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. For uses not allowed by that license, contact us to request publication permission from the copyright holder: Ted Stryk : Emily Lakdawalla : Gordan Ugarkovic

Original image data dated on or about August 18, 2012

Explore related images: Enceladus, Cassini, pretty pictures, scale comparisons, amateur image processing, Voyager 1 and 2, Saturn's moons, Mimas, Uranus' moons

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