Titan size and scale context

Titan is Saturn's largest moon and the only moon in the Solar System with a dense atmosphere. Its methane weather cycle feeds clouds, rain, rivers, lakes, and seas, making it one of the most world-like places beyond Earth. Read its scale context, comparisons, and journey links on the canonical object page.

MercuryTerrestrial planet·4,879 km

TitanLarge icy moon·5,150 km

GanymedeGalilean moon·5,260 km

Scroll up for smaller

Scroll down for larger

Planets

Mercury

Mercury is the smallest planet in the Solar System and the closest one to the Sun. Because of its unusual spin-orbit rhythm, one Mercury solar day lasts 176 Earth days, which is longer than its 88-day year.

Scale fact4,879 kmdiameter

Object class: Terrestrial planet
Mass: ~0.055 Earth masses
Host: Sun
Estimated age: ~4.5 billion years
Composition: Metal-rich silicate rock
Temperature: ~440 K mean surface

Moons

Titan

Scale fact5,150 kmdiameter

Object class: Large icy moon
Mass: ~0.023 Earth masses
Host: Saturn
Estimated age: ~4.5 billion years
Composition: Water ice, silicate rock, nitrogen-methane atmosphere
Temperature: ~94 K surface

Moons

Ganymede

Ganymede is Jupiter's largest moon and the largest moon in the Solar System, bigger than Mercury. It is also the only known moon with its own magnetic field, and evidence points to a buried saltwater ocean beneath its icy shell.

Scale fact5,260 kmdiameter

Object class: Galilean moon
Mass: ~0.025 Earth masses
Host: Jupiter
Estimated age: ~4.5 billion years
Composition: Water ice, silicate rock, metallic iron core and probable saltwater ocean
Temperature: ~90-160 K surface