Largest Objects in the Solar System by Diameter

About This Dataset

This chart ranks the largest objects in the Solar System by diameter, in kilometres, from the Sun through the planets down to the biggest moons. The Sun utterly dominates, dwarfing even the giant planet Jupiter.

✨ AI Insight

The Sun, about 1,391,000 km across, dominates the Solar System completely, roughly ten times the diameter of Jupiter (139,820 km) and over a hundred times that of Earth (12,742 km). Among the planets, the gas giants Jupiter and Saturn (116,460 km) tower over the ice giants Uranus and Neptune, which in turn dwarf the rocky inner planets. Strikingly, the two largest moons, Ganymede (5,268 km) and Titan (5,150 km), are larger than the planet Mercury by diameter, though far less massive. The list spans an enormous range, from the Sun down to moons a few thousand kilometres wide, illustrating how a single star holds more than 99% of the Solar System's mass while everything else, planets and moons alike, orbits as comparatively tiny companions.

Source: NASA Planetary Fact Sheet

Key Findings

Auto-computed highlights from this dataset

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Sun leads with 1,391,000 in All Time.

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Average value in All Time: 178,929 · median: 30,993.

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Gap in All Time: Sun is 270.1× larger than Titan.