IAU descriptor term
Maculae in the Solar System
Macula is the term planetary geologists use for a dark spot. 13 named features carry it, across 3 of the 14 mapped worlds, the largest being Elpis Macula on Titan at 500 km.
Where they are
The largest maculae anywhere
Ranked across every mapped world, by catalogued diameter.
1Elpis MaculaTitan500 km2Polaznik MaculaTitan347 km3Omacatl MaculaTitan225 km4Thrace MaculaEuropa180 km5Polelya MaculaTitan175 km6Ganesa MaculaTitan160 km7Eir MaculaTitan145 km8Olympus MaculaeMars124 km9Cyclades MaculaEuropa107 km10Thera MaculaEuropa95 km11Castalia MaculaEuropa35 km12Boeotia MaculaEuropa30 km13Genetaska MaculaTitan24 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 maculae, 6 categories appear.
Greek7Slavic2Aztec1India1Norway1Iroquois1