Plana on Io
8 named features carry the IAU descriptor Planum — a high plain or plateau on Io, out of 49 in the mapped Solar System.
Named
8
of 260 named places on Io — 3.1%
Largest
889 km
Nemea Planum
Median size
288 km
Across the 8 with a measured diameter
Named between
1979–1985
IAU approval dates
How plana on Io get their names
The IAU assigns each feature class on each world a naming theme. Across the 8 plana with a recorded origin, 2 categories appear, led by Greek.
Greek7Ethiopia1
All 8 plana on Io
Every one has its own page, on the surface it sits on.
Plana elsewhere in the Solar System
The same descriptor is used on 4 other worlds, for 41 more features.