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Mercury · Crater · 422nd largest named feature

Le Guin

Ursula Kroeber; American author (1929-2018).

What Le Guin is

Le Guin is a crater — a circular depression, almost always an impact scar — on Mercury, 61 km across, centred at 18.8° S, 102.7° W in the Beethoven quadrangle. It is the 422nd largest named feature on Mercury and the 316th largest of its class there.

Where the name comes from

Ursula Kroeber; American author (1929-2018). The International Astronomical Union approved the name in 2024, under the theme it applies to every crater on Mercury. Of the 449 features of this class catalogued on Mercury, the naming categories run France (36), United States (35), Japan (33), Italy (31).

Feature class
a circular depression, almost always an impact scar
Diameter
61 km
about a marathon
Coordinates
18.8° S, 102.7° W
Planetocentric, on Mercury
Name approved
2024
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Beethoven
Map sheet on Mercury
Naming category
United States
North America

What it would take to settle Le Guin

Mercury scores 46 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 18.8° S, 102.7° W.

Settlement difficulty here
45.7/ 100
Typical for this world
Mercury overall
46
0.3 easier than the median site
Ranked
235th
of 606 named places on Mercury

What this spot has going for it is sunlight 95% of the sunlight the sunniest latitude on Mercury gets. What works against it is water outside the ice-bearing latitudes.

Computed from Le Guin's catalogued latitude, longitude and feature class — 68% of the model's weight had a basis here, and 3 axes were dropped as not applicable to Mercury (radiation geometry, earth link, known ground). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Mercury 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 Mercury

All 449 craters on Mercury — mapped together, with the naming theme and the size distribution.