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53b - Mare Imbrium

Published online by Cambridge University Press:  05 October 2012

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Summary

C. Herschel 34.5°N, 31.2°W

A small crater, only 13 km across, named after Caroline Herschel, the sister of William Herschel, who discovered the planet Uranus in 1781. Caroline Herschel was her brother's lifelong assistant and herself discovered eight comets.

Mons la Hire 27.8°N, 25.5°W

An isolated mountain massif occupying an area of about 11 × 25 km. It is probably the remnant of the former highlands (as was Mons Vinogradov) that was largely submerged by the Imbrium lava. The mountain peaks reach a height of 1.5 km above the lava plains.

Diophantus 27.6°N, 34.3°W

Delisle 29.9°N, 34.6°W

A pair of young craters lying directly north-south of one another, with sharp rims and diameters of 17 and 25 km, respectively. Delisle has an uneven crater floor with a half-destroyed craterlet, lying centrally on the floor.

Mons Delisle is an isolated remnant of the former highlands, lying southwest of Delisle, with a length of about 30 km. The southern portion of the mountain is rounded and higher, towards the north the ridge distinctly flattens out.

Samir (2 km) is a crater pit with a faint ray system under high solar illumination, and directly alongside lies the crater Louise. Diameter measurements for Louise vary between 800 m and 1.5 km. Both craters lie directly in the centre between Diophantus and Delisle.

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Publisher: Cambridge University Press
Print publication year: 2012

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