Lesavka Chasma
What Lesavka Chasma is
Lesavka Chasma is a chasma — a deep, steep-sided canyon — on Venus, 800 km across, centred at 0.8° S, 145.0° W in the Taussig quadrangle. It is the 244th largest named feature on Venus and the 28th largest of its class there.
Where the name comes from
E. Slavic forest deity, daughter of the forest father Leshiy and the swamp deity Kikimora. The International Astronomical Union approved the name in 2003, under the theme it applies to every chasma on Venus. Of the 63 features of this class catalogued on Venus, the naming categories run Siberia (5), Slavic (4), Caucasus (4), Greek (3).
What it would take to settle Lesavka Chasma
Venus scores 43 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 0.8° S, 145.0° W.
What this spot has going for it is sunlight — 100% of the sunlight the sunniest latitude on Venus gets. What works against it is water — same as everywhere else on this world.
Computed from Lesavka Chasma'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 Venus (radiation geometry, earth link). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on Venus 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 chasma features on Venus
All 63 chasmata on Venus — mapped together, with the naming theme and the size distribution.