IAU descriptor term
Promontoria in the Solar System
Promontorium is the term planetary geologists use for a cape, where a highland juts into a plain. 9 named features carry it, across 1 of the 14 mapped worlds, the largest being Promontorium Taenarium on The Moon at 70 km.
Where they are
The largest promontoria anywhere
Ranked across every mapped world, by catalogued diameter.
1Promontorium TaenariumThe Moon70 km2Promontorium AgarumThe Moon62.5 km3Promontorium LaplaceThe Moon50 km4Promontorium HeraclidesThe Moon50 km5Promontorium KelvinThe Moon45 km6Promontorium FresnelThe Moon20 km7Promontorium AgassizThe Moon18.8 km8Promontorium DevilleThe Moon16.6 km9Promontorium ArcherusiaThe Moon11.2 km
What they are named after
Naming themes are set per world, so one descriptor can draw on very different sources depending on where it sits. Across all 9 promontoria, 5 categories appear.
France3Greek2Russia2Scotland1Switzerland1