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The Moon · Crater · 498th largest named feature

Julius Caesar

Roman emperor, introduced the Julian calendar (c. 102-44 B.C.).

What Julius Caesar is

Julius Caesar is a crater — a circular depression, almost always an impact scar — on The Moon, 84.7 km across, centred at 9.2° N, 15.2° E in the Julius Caesar quadrangle. It is the 498th largest named feature on The Moon and the 313th largest of its class there.

Where the name comes from

Roman emperor, introduced the Julian calendar (c. 102-44 B.C.). The International Astronomical Union approved the name in 1935, 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
84.7 km
about the width of Yellowstone
Coordinates
9.2° N, 15.2° E
Planetocentric, on The Moon
Name approved
1935
By the IAU Working Group for Planetary System Nomenclature
Quadrangle
Julius Caesar
Map sheet on The Moon
Naming category
Roman
Europe

What it would take to settle Julius Caesar

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 9.2° N, 15.2° E.

Settlement difficulty here
27.1/ 100
Better than most of this world
The Moon overall
29.1
2 easier than the median site
Ranked
284th
of 2,023 named places on The Moon

What this spot has going for it is earth link near side — Earth stands 72° above the horizon and never moves. What works against it is water outside the ice-bearing latitudes.

Computed from Julius Caesar'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.

Julius Caesar's satellite craters

The IAU names smaller craters around a major one by letter. Julius Caesar has 10, and each shares the parent's namesake rather than carrying one of its own.

Julius Caesar A 13.8 kmJulius Caesar B 6.7 kmJulius Caesar C 5 kmJulius Caesar D 4.5 kmJulius Caesar F 25.1 kmJulius Caesar G 20.2 kmJulius Caesar H 3.5 kmJulius Caesar J 3.1 kmJulius Caesar P 36.1 kmJulius Caesar Q 28.6 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.