Guillaume is an old
lunar impact crater on the
Moon
The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...
's northern
hemisphere, and is located on the
far side relative to the
Earth. It lies just to the southeast of the slightly larger crater
Perkin. This is a worn and eroded formation, with features that have been softened and rounded over time. A cluster of small craters covers most of the northeastern rim. Several small craterlets lie along the edge to the south and west. The bowl-like interior is nearly featureless, with only a few small craterlets to mark the surface.
Prior to formal naming by the
IAU in 1979, Guillaume was called ''Crater 73''.
Lunar Farside Chart (LFC-1A)
2nd Edition October 1967
Satellite craters
By convention, these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Guillaume.
References
*
*
*
*
*
*
*
*
*
*
*
*
{{Authority control
Impact craters on the Moon