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The Moon · Crater · 1064th largest named feature

Ellerman

Ferdinand; American astronomer (1869-1940).

What Ellerman is

Ellerman is a crater — a circular depression, almost always an impact scar — on The Moon, 46.2 km across, centred at 25.4° S, 120.4° W in the Houzeau quadrangle. It is the 1064th largest named feature on The Moon and the 821st largest of its class there.

Where the name comes from

Ferdinand; American astronomer (1869-1940). The International Astronomical Union approved the name in 1970, under the theme it applies to every crater on The Moon. Of the 1615 features of this class catalogued on The Moon, the naming categories run Germany (234), American (229), France (163), Great Britain (160).

Feature class
a circular depression, almost always an impact scar
Diameter
46.2 km
about a marathon
Coordinates
25.4° S, 120.4° W
Planetocentric, on The Moon
Name approved
1970
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Houzeau
Map sheet on The Moon
Naming category
American
North America

What it would take to settle Ellerman

The Moon scores 29.1 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 25.4° S, 120.4° W.

Settlement difficulty here
31/ 100
Typical for this world
The Moon overall
29.1
1.9 harder than the median site
Ranked
1593rd
of 2,023 named places on The Moon

What this spot has going for it is temperature about -11 °C mean at this latitude. What works against it is water outside the ice-bearing latitudes.

Computed from Ellerman's catalogued latitude, longitude and feature class — 84% of the model's weight had a basis here, and one axis was dropped as not applicable to The Moon (radiation geometry). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on The Moon 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 The Moon

All 1,615 craters on The Moon — mapped together, with the naming theme and the size distribution.