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Mars · Mensa · 139th largest named feature

Nilosyrtis Mensae

Classical albedo feature name.

What Nilosyrtis Mensae is

Nilosyrtis Mensae is a mensa — a flat-topped elevation with cliff-like edges — on Mars, 676 km across, centred at 34.8° N, 68.5° E in the Casius quadrangle. It is the 139th largest named feature on Mars and the 6th largest of its class there.

Where the name comes from

Classical albedo feature name. The International Astronomical Union approved the name in 1973, under the theme it applies to every mensa on Mars. Of the 38 features of this class catalogued on Mars, the naming categories run Greek (19), Latin (14), Roman (3), Slovenia (1).

Feature class
a flat-topped elevation with cliff-like edges
Diameter
676 km
about the length of Italy
Coordinates
34.8° N, 68.5° E
Planetocentric, on Mars
Name approved
1973
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Casius
Map sheet on Mars
Naming category
Greek
Europe

What it would take to settle Nilosyrtis Mensae

Mars scores 26.6 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 34.8° N, 68.5° E.

Settlement difficulty here
27.3/ 100
Typical for this world
Mars overall
26.6
0.7 harder than the median site
Ranked
1454th
of 2,049 named places on Mars

What this spot has going for it is sunlight 84% of the sunlight the sunniest latitude on Mars gets. What works against it is water outside the ice-bearing latitudes.

Computed from Nilosyrtis Mensae's catalogued latitude, longitude and feature class — 74% of the model's weight had a basis here, and 2 axes were dropped as not applicable to Mars (radiation geometry, earth link). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Mars 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 mensa features on Mars

All 38 mensae on Mars — mapped together, with the naming theme and the size distribution.