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17 - Sinus Asperitatis

Published online by Cambridge University Press:  05 October 2012

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Summary

Sinus Asperitatis 6.0°S, 25.0°E

Sinus Asperitatis, ‘Bay of Asperity’, is a lava-covered surface about 180 km across. It lies north and east of the crater Theophilus and in the north passes into Mare Tranquillitatis. It has an appropriate name, because the surface of the lava is rough, furrowed, and uneven.

Torricelli 4.6°S, 28.5°E

Torricelli is a circular crater of about 22 km in diameter. The western crater wall is broken and overlapped by a smaller elliptical crater. Together both craters appear pear-shaped. Torricelli lies within a nameless, significantly larger ghost crater, the remnants of the crater wall of which may be seen only in the southeastern direction. The rest has been submerged by the Sinus Asperitatis lava. The whole region has been covered by ejecta from the Theophilus impact and is correspondingly craggy.

Censorinus 0.4°S, 32.7°E

A small, funnel-shaped crater with a diameter of just 3 km, lying on the southern border of Mare Tranquillitatis. It is surrounded by a halo of very bright ejecta. At high solar elevations it appears as one of the brightest objects on the Moon's surface.

Capella 7.5°N, 35.0°E

A crater, 49 km in diameter, lying on the northern edge of Mare Nectaris. Its central peak is extremely large and wide relative to the crater's diameter, and has a depression at its summit. The central peak was probably altered by post-volcanic events. Vallis Capella, a valley about 110 km long, crosses the crater, running in a southeasterly direction and has a slightly tapering appearance.

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Publisher: Cambridge University Press
Print publication year: 2012

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