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Ganymede · Crater · 87th largest named feature

Thoth

Egyptian moon god; invented all arts and sciences.

What Thoth is

Thoth is a crater — a circular depression, almost always an impact scar — on Ganymede, 102 km across, centred at 43.2° S, 147.3° W. It is the 87th largest named feature on Ganymede and the 28th largest of its class there.

Where the name comes from

Egyptian moon god; invented all arts and sciences. The International Astronomical Union approved the name in 1985, under the theme it applies to every crater on Ganymede. Of the 129 features of this class catalogued on Ganymede, the naming categories run Egypt (42), Assyro-Babylonian (30), Phoenician (18), Sumerian (16).

Feature class
a circular depression, almost always an impact scar
Diameter
102 km
about the width of Yellowstone
Coordinates
43.2° S, 147.3° W
Planetocentric, on Ganymede
Name approved
1985
By the IAU Working Group for Planetary System Nomenclature
Naming category
Egypt
Africa

What it would take to settle Thoth

Ganymede scores 55 as a world. That number is the same for every square metre of it — but sunlight, water, radiation and the ground under your feet are not. This is the same question asked at 43.2° S, 147.3° W.

Settlement difficulty here
58.3/ 100
Harder than most of this world
Ganymede overall
55
3.3 harder than the median site
Ranked
143rd
of 196 named places on Ganymede

What this spot has going for it is water same as everywhere else on this world. What works against it is radiation geometry inside the open-field polar cap, where the plasma gets down.

Computed from Thoth's catalogued latitude, longitude and feature class — 84% of the model's weight had a basis here, and 2 axes were dropped as not applicable to Ganymede (earth link, known ground). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Ganymede and are already counted in the world's own index, not again here.

What this cannot see: elevation. Slope, local shadowing and the polar “peaks of eternal light” — ridge tops near the poles of a barely tilted world that catch sun almost continuously while a crater floor kilometres away never does — need a terrain model this does not have. Where a real mission targets a pole, that is usually why.

What is next to it

The largest crater features on Ganymede

All 129 craters on Ganymede — mapped together, with the naming theme and the size distribution.