Ganymede

Ganymede, third of the Galilean moons orbiting Jupiter is the biggest moon in the Solaris (just barely before Titan ). It´s bigger than the planet Mercury was and if it were orbiting the Sol, it would probably be considered a planet. Its the only known moon with existing magnetosphere, thanks to the liquid iron core.

Alternative Name(s)

Jupiter III

Type

Planetoid / Moon

Location under

Jupiter

Mass: 1,4819×10²³ kg (0,025 Terras)
Surface area: 87 184 926km²
Surface gravity: 1,428 m/s² (0,146 g)
Escape velocity: 2,741 km/s
Rotation period: synchronous
Surface temp.

min: 70K
mean: 110K
max: 152K

Atmosphere