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Mars · Unda · 222nd largest named feature

Abalos Undae

Classical albedo feature at 72N, 70W.

What Abalos Undae is

Abalos Undae is an unda — a dune field — on Mars, 443 km across, centred at 78.5° N, 87.5° W in the Mare Boreum quadrangle. It is the 222nd largest named feature on Mars and the 3rd largest of its class there.

Where the name comes from

Classical albedo feature at 72N, 70W. The International Astronomical Union approved the name in 1988, under the theme it applies to every unda on Mars. Of the 6 features of this class catalogued on Mars, the naming categories run Greek (3), Roman (2), Scandinavian (1).

Feature class
a dune field
Diameter
443 km
about the length of the Grand Canyon
Coordinates
78.5° N, 87.5° W
Planetocentric, on Mars
Name approved
1988
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Mare Boreum
Map sheet on Mars
Naming category
Roman
Europe

What it would take to settle Abalos Undae

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 78.5° N, 87.5° W.

Settlement difficulty here
25.6/ 100
Typical for this world
Mars overall
26.6
1 easier than the median site
Ranked
246th
of 2,049 named places on Mars

What this spot has going for it is water inside the polar zone where Mars keeps its ice. What works against it is sunlight 46% of the sunlight the sunniest latitude on Mars gets.

Computed from Abalos Undae'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 unda features on Mars