List of gravitationally rounded moons in the Solar System

This post is a list of the 19 gravitationally rounded moons in the Solar System. In total, there are 219 known moons in our Solar System (14 of which orbit dwarf planets). For each planet below, I listed the moons according to size. The diameter of each moon is also provided. Source: Wikipedia

Mercury (0 total)

Venus (0 total)

Earth (1 total)

Moon - 3,474 km

Photo source: Wikimedia Commons, George H. Revera

License: CC BY-SA 3.0

Mars (2 total)

Jupiter (79 total)

Ganymede - 5,268 km

Photo source: Wikimedia Commons, NASA and JPL

Callisto - 4,816 km

Photo source: Wikimedia Commons, NASA, JPL and DLR

Io - 3,636 km

Photo source: Wikimedia Commons, NASA, JPL and University of Arizona

Europa - 3,120 km

Photo source: Wikimedia Commons, NASA, JPL and DLR

Saturn (82 total)

Titan - 5,150 km

Photo source: Wikimedia Commons, NASA

Rhea - 1,528 km

Photo source: Wikimedia Commons, NASA, JPL and Space Science Institute

Iapetus - 1,468 km

Photo source: Wikimedia Commons, NASA, JPL and Space Science Institute

Dione - 1,124 km

Photo source: Wikimedia Commons, NASA

Tethys - 1,072 km

Photo source: Wikimedia Commons, NASA, JPL and Space Science Institute

Enceladus - 504 km

Photo source: Wikimedia Commons, NASA and JPL

Mimas - 396 km

Photo source: Wikimedia Commons, NASA

Uranus (27 total)

Titania - 1,576 km

Photo source: Wikimedia Commons, NASA and JPL

Oberon - 1,522 km

Photo source: Wikimedia Commons, NASA

Umbriel - 1,168 km

Photo source: Wikimedia Commons, NASA and Jet Propulsion Lab

Ariel - 1,156 km

Photo source: Wikimedia Commons, NASA and JPL

Miranda - 470 km

Photo source: Wikimedia Commons, NASA and JPL-Caltech

Neptune (14 total)

Triton - 2,706 km

Photo source: Wikimedia Commons, NASA, Jet Propulsion Lab and U.S. Geological Study

Pluto (5 total)

Charon - 1,212 km

Photo source: Wikimedia Commons, NASA, Johns Hopkins University Applied Physics Laboratory, Southwest Research Institute and Alex Parker