Tholi on Io
3 named features carry the IAU descriptor Tholus — a small domical mountain or hill on Io, out of 109 in the mapped Solar System.
Named
3
of 260 named places on Io — 1.2%
Largest
199 km
Apis Tholus
Median size
179 km
Across the 3 with a measured diameter
Named between
1979–2003
IAU approval dates
How tholi on Io get their names
The IAU assigns each feature class on each world a naming theme. Across the 3 tholi with a recorded origin, 2 categories appear, led by Greek.
Greek2Hottentot1
All 3 tholi on Io
Every one has its own page, on the surface it sits on.
Tholi elsewhere in the Solar System
The same descriptor is used on 4 other worlds, for 106 more features.