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12 - Vallis Rheita

Published online by Cambridge University Press:  05 October 2012

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Summary

Vallis Rheita 42.5°S, 51.5°E

Vallis Rheita is a linear valley, approximately 450 km long (similar to Vallis Snellius). At its widest points it reaches a width of about 30 km. It consists of a string of numerous, partially overlapping craters. It is oriented directly towards the centre of the Nectaris Basin and it is suggested that it may have arisen from secondary events following the Nectaris impact.

The crater chain begins northwest of the crater Rheita, crosses the crater Young (71 km, 41.5°S, 50.9°E), then the crater Mallet (58 km, 45.5°S, 54.2°E) and ends southeast of the crater Reimarus (48 km, 47.7°S, 60.3°E).

Rheita 37.1°S, 47.2°E

Rheita is a prominent crater, 70 km in diameter and with an eccentrically placed central peak, and lies northeast of Metius. Vallis Rheita runs past the crater's southern wall. Slightly farther north lies the crater Rheita E, which, with its measurements of 66 × 30 km, exhibits a very elongated shape. It consists of at least three overlapping individual craters, which probably (like Schiller) gained its current form through a later impact.

If the position of Janssen, Fabricius, Metius, Rheita and Rheita E is examined at a large scale, then it appears that they all lie on a nearly straight line. It is conceivable that their formation, nearly simultaneously, may be traced back to a very large asteroid that broke apart shortly before the impact.

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Publisher: Cambridge University Press
Print publication year: 2012

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