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The Moon · Crater · 464th largest named feature

Ibn Firnas

Abbas Ibn Firnas; Spanish-Arab humanitarian, technologist (unkn- A.D. 887).

What Ibn Firnas is

Ibn Firnas is a crater — a circular depression, almost always an impact scar — on The Moon, 88.3 km across, centred at 6.8° N, 122.3° E in the Ostwald quadrangle. It is the 464th largest named feature on The Moon and the 287th largest of its class there.

Where the name comes from

Abbas Ibn Firnas; Spanish-Arab humanitarian, technologist (unkn- A.D. 887). The International Astronomical Union approved the name in 1976, under the theme it applies to every crater on The Moon. Of the 1615 features of this class catalogued on The Moon, the naming categories run Germany (234), American (229), France (163), Great Britain (160).

Feature class
a circular depression, almost always an impact scar
Diameter
88.3 km
about the width of Yellowstone
Coordinates
6.8° N, 122.3° E
Planetocentric, on The Moon
Name approved
1976
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Ostwald
Map sheet on The Moon
Naming category
Spain
Europe

What it would take to settle Ibn Firnas

The Moon scores 29.1 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 6.8° N, 122.3° E.

Settlement difficulty here
30.4/ 100
Typical for this world
The Moon overall
29.1
1.3 harder than the median site
Ranked
1327th
of 2,023 named places on The Moon

What this spot has going for it is sunlight 99% of the sunlight the sunniest latitude on The Moon gets. What works against it is water outside the ice-bearing latitudes.

Computed from Ibn Firnas's catalogued latitude, longitude and feature class — 84% of the model's weight had a basis here, and one axis was dropped as not applicable to The Moon (radiation geometry). Gravity, pressure, delta-v and distance from the Sun are the same everywhere on The Moon 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.

Ibn Firnas's satellite craters

The IAU names smaller craters around a major one by letter. Ibn Firnas has 2, and each shares the parent's namesake rather than carrying one of its own.

Ibn Firnas E 40.4 kmIbn Firnas L 19.6 km

What is next to it

The largest crater features on The Moon

All 1,615 craters on The Moon — mapped together, with the naming theme and the size distribution.