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S
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1636
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E
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84 km
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''Unknown''
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160
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is a
Lunar Impact Crater that lies in the southern
Hemisphere on the
Far Side of the
Moon . It is located to the south of the huge
Poincaré Walled Plain , and to the northeast of the
Schrödinger Walled Plain . To the east-southeast is the larger
Minnaert Crater .
The rim of Lyman has not been significantly worn and has a well-defined edge and interior features that have not been eroded through impacts. The perimeter is roughly circular with outward bulges along the southern and eastern edges where slumping has occurred. Around much of the interior edge the unconsolidated material has collapsed, forming a ring-shaped pile around the edge of the interior floor. There are a few s along parts of the inner wall.
The interior floor of Lyman crater is relatively level with a few minor ridges and a small number of tiny craterlets. At the mid-point of the interior floor is a central peak formation. This consists of a main peak with attached foothills to the north and northeast. This formation of ridges occupies a diameter of over 10
Kilometer s.
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 Lyman crater.
