Regiones on Ganymede
6 named features carry the IAU descriptor Regio — a large area distinguished by its brightness or colour on Ganymede, out of 51 in the mapped Solar System.
Named
6
of 196 named places on Ganymede — 3.1%
Largest
4,940 km
Marius Regio
Median size
4,000 km
Across the 6 with a measured diameter
Named between
1979–2013
IAU approval dates
How regiones on Ganymede get their names
The IAU assigns each feature class on each world a naming theme. Across the 6 regiones with a recorded origin, 4 categories appear, led by American.
American3Germany1Italy1England1
All 6 regiones on Ganymede
Every one has its own page, on the surface it sits on.
Regiones elsewhere in the Solar System
The same descriptor is used on 6 other worlds, for 45 more features.