List of Solar System objects by size

largest25th-largest bodyequatorial radiusextraterrestrial bodiesfifteenth-largest objectlargest objectlist of objects by massseven moonssixteenth-largest objectsmaller
This is a partial list of Solar System objects by size, arranged in descending order of mean volumetric radius, and divided into several size classes.wikipedia
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Jupiter

JovianGioveplanet Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.

Titan (moon)

TitanSaturn's moon Titanatmosphere
Titan is the largest moon of Saturn and the second-largest natural satellite in the Solar System.

Moon

lunarthe MoonLuna
It is the fifth-largest satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits (its primary).

Eris (dwarf planet)

Eris136199 Eris2003 UB313
Eris is the ninth most massive object directly orbiting the Sun, and the sixteenth most massive overall, because seven moons are more massive than the known dwarf planets.

Ceres (dwarf planet)

Ceres1 CeresAtmosphere of Ceres
It is the 25th-largest body in the Solar System within the orbit of Neptune.

Mercury (planet)

MercuryMercurioplanet Mercury
Mercury is also smaller—albeit more massive—than the largest natural satellites in the Solar System, Ganymede and Titan.

Europa (moon)

EuropaEuropanLife on Europa
At just over 3100 km in diameter, it is the sixth-largest moon and fifteenth-largest object in the Solar System.

Triton (moon)

TritonAndvari Triton
Triton is the seventh-largest moon and sixteenth-largest object in the Solar System, and is modestly larger than the dwarf planets Pluto and Eris.

Small Solar System body

small Solar System bodiessmall bodiesmacroscopic system
This list contains the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.

Solar System

outer Solar Systeminner Solar Systemouter planets
Solar System objects more massive than 10 21 kilograms (one yottagram [Yg]) are known or expected to be approximately spherical.

772 Tanete

TaneteKingdom of Tanete
* List of Solar System objects by size

705 Erminia

65489 Ceto

Ceto65489 Ceto I PhorcysCeto and Phorcys
*List of Solar System objects by size

Moons of Jupiter

moon of JupiterJovian systemJupiter's moons
The four Galileans are all over 3100 km in diameter; the largest Galilean, Ganymede, is the ninth largest object in the Solar System, after the Sun and seven of the planets, Ganymede being larger than Mercury.