Fossae on Mercury
2 named features carry the IAU descriptor Fossa — a long, narrow depression on Mercury, out of 117 in the mapped Solar System.
Named
2
of 606 named places on Mercury — 0.3%
Largest
395 km
Borobudur Fossae
Median size
353 km
Across the 2 with a measured diameter
Named between
2008–2019
IAU approval dates
How fossae on Mercury get their names
The IAU assigns each feature class on each world a naming theme. Across the 2 fossae with a recorded origin, 2 categories appear, led by Indonesia.
Indonesia1Roman1
All 2 fossae on Mercury
Every one has its own page, on the surface it sits on.
Fossae elsewhere in the Solar System
The same descriptor is used on 8 other worlds, for 115 more features.