Moon J1 Io

Physical characteristics

Mean diameter3643.2 km
Extent3660.0×3637.4×3630.6 km
Mass8.934×1022 kg
Avg. density3.529 g/cm3
Equatorial surface gravity1.797 m/s2
0.183 g
Escape velocity2.558 km/s
Rotation period (sidereal)42.459 hours



Models are given in Stanford Triangle Format (PLY) and Alias Waveform Format (OBJ) - you can use MeshLab or any other tool to convert them to other formats.

Please note that the models are in planetocentric coordinate system, with Z axis passing through north pole. Actual rotational axis may differ from planetocentric poles, especially for small irregular bodies.

Surface Textures

Textures are simple cylindrical projections with prime meridian at the middle, provided at the highest resolution available.

Last Modified: 03 Jul 2021