Fluctus on Io
19 named features carry the IAU descriptor Fluctus — a flow of erupted material on Io, out of 81 in the mapped Solar System.
Named
19
of 260 named places on Io — 7.3%
Largest
500 km
Masubi Fluctus
Median size
200 km
Across the 19 with a measured diameter
Named between
1985–2025
IAU approval dates
How fluctus on Io get their names
The IAU assigns each feature class on each world a naming theme. Across the 19 fluctus with a recorded origin, 16 categories appear, led by China.
China3Japan2Teutonic1Norse1Sumerian1Hawaii1Aztec1Akkadian (Accadian)1
All 19 fluctus on Io
Every one has its own page, on the surface it sits on.
Masubi Fluctus500 kmTung Yo Fluctus458 kmDonar Fluctus436 kmAcala Fluctus415 kmFjorgynn Fluctus414 kmUta Fluctus367 kmLei Kung Fluctus348 kmKanehekili Fluctus259 kmMixcoatl Fluctus246 kmMarduk Fluctus200 kmQuzah Fluctus189 kmLei zi Fluctus177 kmArinna Fluctus122 kmUpulevo Fluctus113 kmEuboea Fluctus113 kmTsui Goab Fluctus111 kmPillan Fluctus95 kmGuaraci Fluctus92 kmSobo Fluctus44.8 km
Fluctus elsewhere in the Solar System
The same descriptor is used on 3 other worlds, for 62 more features.