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Callisto · Crater · 133rd largest named feature

Habrok

Norse; a hawk.

What Habrok is

Habrok is a crater — a circular depression, almost always an impact scar — on Callisto, 37.2 km across, centred at 76.2° N, 131.9° W. It is the 133rd largest named feature on Callisto and the 120th largest of its class there.

Where the name comes from

Norse; a hawk. The International Astronomical Union approved the name in 1979, under the theme it applies to every crater on Callisto. Of the 141 features of this class catalogued on Callisto, the naming categories run Norse (70), Finland (12), Norway (10), Eskimo (9).

Feature class
a circular depression, almost always an impact scar
Diameter
37.2 km
about a marathon
Coordinates
76.2° N, 131.9° W
Planetocentric, on Callisto
Name approved
1979
By the IAU Working Group for Planetary System Nomenclature
Naming category
Norse
Europe

What it would take to settle Habrok

Callisto scores 44.6 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 76.2° N, 131.9° W.

Settlement difficulty here
47.5/ 100
Harder than most of this world
Callisto overall
44.6
2.9 harder than the median site
Ranked
144th
of 154 named places on Callisto

What this spot has going for it is water same as everywhere else on this world. What works against it is sunlight 24% of the sunlight the sunniest latitude on Callisto gets.

Computed from Habrok'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 Callisto (earth link, known ground). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Callisto 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 Callisto

All 141 craters on Callisto — mapped together, with the naming theme and the size distribution.