IAU descriptor term
Rimae in the Solar System
Rima is the term planetary geologists use for a fissure — a collapsed lava channel or a crack in the crust. 112 named features carry it, across 1 of the 14 mapped worlds, the largest being Rimae Sirsalis on The Moon at 405 km.
Where they are
The largest rimae anywhere
Ranked across every mapped world, by catalogued diameter.
1Rimae SirsalisThe Moon405 km2Rima BrayleyThe Moon327 km3Rimae PettitThe Moon320 km4Rima MariusThe Moon284 km5Rima SharpThe Moon277 km6Rimae HippalusThe Moon266 km7Rimae HaseThe Moon257 km8Rima HesiodusThe Moon252 km9Rimae KopffThe Moon250 km10Rimae RiccioliThe Moon250 km11Rima AriadaeusThe Moon247 km12Rima DraperThe Moon244 km13Rimae MerseniusThe Moon240 km14Rimae BodeThe Moon233 km15Rimae GutenbergThe Moon223 km16Rima CardanusThe Moon222 km17Rimae ArchimedesThe Moon215 km18Rimae ParryThe Moon210 km19Rima HyginusThe Moon204 km20Rima DiophantusThe Moon202 km21Rimae HypatiaThe Moon200 km22Rimae TriesneckerThe Moon200 km23Rimae GocleniusThe Moon190 km24Rima GalilaeiThe Moon186 km25Rimae HeveliusThe Moon180 km26Rimae HerigoniusThe Moon180 km27Rimae PlatoThe Moon180 km28Rimae AristarchusThe Moon175 km29Rimae DarwinThe Moon170 km30Rima CauchyThe Moon167 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 112 rimae, 24 categories appear.
Germany19France19Greek17Italy12Great Britain12Latin4American3Spain3