Tags: Crater.
Mersenius is a lunar crater that is located to the west of the Mare Humorum in the southwestern part of the Moon. To the southwest is the crater Cavendish and to the south-southeast lies Liebig. Mersenius is 84 kilometers in diameter and 2.3 kilometers deep. It is from the Nectarian period 3.92 to 3.85 billion years ago.The rim of Mersenius is heavily worn especially in the low northern section. The crater Mersenius N lies across the southwestern rim.