IAU descriptor term
Lacunae in the Solar System
Lacuna is the term planetary geologists use for an irregular depression, read as the bed of a lake that has dried. 13 named features carry it, across 1 of the 14 mapped worlds, the largest being Woytchugga Lacuna on Titan at 449 km.
Where they are
The largest lacunae anywhere
Ranked across every mapped world, by catalogued diameter.
1Woytchugga LacunaTitan449 km2Nakuru LacunaTitan188 km3Kutch LacunaTitan175 km4Cerknica LacunaTitan96 km5Veliko LacunaTitan90 km6Jerid LacunaTitan42.6 km7Orog LacunaTitan42 km8Ngami LacunaTitan37.2 km9Atacama LacunaTitan35.9 km10Uyuni LacunaTitan27 km11Eyre LacunaTitan25.4 km12Melrhir LacunaTitan23 km13Racetrack LacunaTitan9.9 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 13 lacunae, 12 categories appear.
Australia2Kenya1India1Slovenia1Bosnia and Herzegovina1Tunisia1Mongolia1Botswana1