Pantheon Fossae
What Pantheon Fossae is
Pantheon Fossae is a fossa — a long, narrow depression — on Mercury, 311 km across, centred at 30.2° N, 162.8° E in the Liguria quadrangle. It is the 62nd largest named feature on Mercury and the 2nd largest of its class there.
Where the name comes from
Classic domed Roman building begun in 27 BC by Marcus Agrippa, and rebuilt by Hadrian between AD 118 and 128. The International Astronomical Union approved the name in 2008, under the theme it applies to every fossa on Mercury. Of the 2 features of this class catalogued on Mercury, the naming categories run Indonesia (1), Roman (1).
What it would take to settle Pantheon Fossae
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 30.2° N, 162.8° E.
What this spot has going for it is sunlight — 86% of the sunlight the sunniest latitude on Mercury gets. What works against it is water — outside the ice-bearing latitudes.
Computed from Pantheon Fossae'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.