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Mercury · Crater · 517th largest named feature

Kulthum

Umm; Alternate spellings Kulthūm, Kalthoum, and Kalsoum; Egyptian singer (born between 1898 and 1904, died 1975).

What Kulthum is

Kulthum is a crater — a circular depression, almost always an impact scar — on Mercury, 31 km across, centred at 50.7° N, 93.5° E in the Liguria quadrangle. It is the 517th largest named feature on Mercury and the 397th largest of its class there.

Where the name comes from

Umm; Alternate spellings Kulthūm, Kalthoum, and Kalsoum; Egyptian singer (born between 1898 and 1904, died 1975). The International Astronomical Union approved the name in 2015, 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
31 km
about a marathon
Coordinates
50.7° N, 93.5° E
Planetocentric, on Mercury
Name approved
2015
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Liguria
Map sheet on Mercury
Naming category
Egypt
Africa

What it would take to settle Kulthum

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 50.7° N, 93.5° E.

Settlement difficulty here
47/ 100
Typical for this world
Mercury overall
46
1 harder than the median site
Ranked
447th
of 606 named places on Mercury

What this spot has going for it is ground mixed ground — a rim, a floor and slopes between them. What works against it is water outside the ice-bearing latitudes.

Computed from Kulthum'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.