Zsigmondy (crater)
Encyclopedia
Zsigmondy is a lunar
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 located beyond the northwestern limb on the far side of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

. Attached to the southeastern rim of the crater is the crater Omar Khayyam
Omar Khayyam (crater)
Omar Khayyam is a lunar crater that is located just beyond the northwestern limb of the Moon, on the far side from the Earth. It lies in a region of the surface that is sometimes brought into view of the Earth due to libration, and under favorable lighting it can be viewed from the edge...

, which lies within the much larger Poczobutt
Poczobutt (crater)
Poczobutt is a large lunar impact crater that is located on the far side of the Moon, just beyond the northwestern limb in an area occasionally brought into sight due to libration effects. This is a damaged formation that is partly overlain by several named craters. Across the rim to the...

. Farther to the east, along the north rim of Poczobutt, is Smoluchowski
Smoluchowski (crater)
Smoluchowski is a lunar impact crater on the far side of the Moon. It lies in the part of the lunar surface that is sometimes brought into view of the Earth during periods of favorable libration and illumination from sunlight, but at such times little detail can be seen as the crater is observed...

.

The rim of Zsigmondy is eroded and distorted in form, having a somewhat polygon
Polygon
In geometry a polygon is a flat shape consisting of straight lines that are joined to form a closed chain orcircuit.A polygon is traditionally a plane figure that is bounded by a closed path, composed of a finite sequence of straight line segments...

al outline. It overlies a comparably sized crater formation Zsigmondy S along the western rim. A pair of small craters lies across the low western rim, and another pair is situated on the inner wall to the southeast. On the interior, the floor is relatively flat in the western half with a low central rise near the mid-point.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Zsigmondy.
Zsigmondy Latitude Longitude Diameter
A 62.8° N 102.6° W 63 km
S 59.7° N 106.7° W 64 km
Z 62.1° N 104.9° W 23 km
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