How many tholi are there on Venus?

62 features on Venus carry the IAU descriptor Tholus, out of 1,985 named places on the world.

What does Tholus mean in planetary nomenclature?

Tholus is the IAU descriptor term for a small domical mountain or hill. It is used on 5 of the mapped worlds, for 109 named features in total.

Toci Tholus, 300 km across — 2.5% of Venus's own diameter. Aztec earthquake goddess.

The IAU draws these names from 39 categories: Greek (5), Slavic (4), New Zealand (3), Japan (3), Aztec (2), Indonesia (2), Italy (2), Brazil (2).

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62 named features carry the IAU descriptor Tholus — a small domical mountain or hill on Venus, out of 109 in the mapped Solar System.

Named

of 1,985 named places on Venus — 3.1%

Largest

300 km

Toci Tholus

Median size

77 km

Across the 62 with a measured diameter

Named between

1985–2023

IAU approval dates

The IAU assigns each feature class on each world a naming theme. Across the 62 tholi with a recorded origin, 39 categories appear, led by Greek.

Greek5Slavic4New Zealand3Japan3Aztec2Indonesia2Italy2Brazil2

Every one has its own page, on the surface it sits on.

The same descriptor is used on 4 other worlds, for 47 more features.