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Mars · Dorsum · 112th largest named feature

Hesperia Dorsa

Albedo feature name.

What Hesperia Dorsa is

Hesperia Dorsa is a dorsum — a ridge — on Mars, 818 km across, centred at 22.8° S, 113.2° E in the Mare Tyrrhenum quadrangle. It is the 112th largest named feature on Mars and the 6th largest of its class there.

Where the name comes from

Albedo feature name. The International Astronomical Union approved the name in 1991, under the theme it applies to every dorsum on Mars. Of the 36 features of this class catalogued on Mars, the naming categories run Greek (20), Latin (13), Egypt (1), Syria (1).

Feature class
a ridge
Diameter
818 km
about the length of Italy
Coordinates
22.8° S, 113.2° E
Planetocentric, on Mars
Name approved
1991
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Mare Tyrrhenum
Map sheet on Mars
Naming category
Latin
Europe

What it would take to settle Hesperia Dorsa

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 22.8° S, 113.2° E.

Settlement difficulty here
27.3/ 100
Typical for this world
Mars overall
26.6
0.7 harder than the median site
Ranked
1444th
of 2,049 named places on Mars

What this spot has going for it is sunlight 93% of the sunlight the sunniest latitude on Mars gets. What works against it is water outside the ice-bearing latitudes.

Computed from Hesperia Dorsa'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 dorsum features on Mars

All 36 dorsa on Mars — mapped together, with the naming theme and the size distribution.