Philus Sulcus
What Philus Sulcus is
Philus Sulcus is a sulcus — a set of parallel grooves and ridges — on Ganymede, 465 km across, centred at 44.5° N, 150.1° E. It is the 41st largest named feature on Ganymede and the 33rd largest of its class there.
Where the name comes from
Greek; where Ganymede and Hebe were worshipped as rain-givers. The International Astronomical Union approved the name in 1979, under the theme it applies to every sulcus on Ganymede. Of the 35 features of this class catalogued on Ganymede, the naming categories run Assyro-Babylonian (13), Greek (7), Sumerian (7), Babylon (3).
What it would take to settle Philus Sulcus
Ganymede scores 55 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 44.5° N, 150.1° E.
What this spot has going for it is water — same as everywhere else on this world. What works against it is radiation geometry — inside the open-field polar cap, where the plasma gets down.
Computed from Philus Sulcus's catalogued latitude, longitude and feature class — 84% of the model's weight had a basis here, and 2 axes were dropped as not applicable to Ganymede (earth link, known ground). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Ganymede 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 sulcus features on Ganymede
All 35 sulci on Ganymede — mapped together, with the naming theme and the size distribution.