It is bordered along the western and eastern sides by continental regions of irregular terrain.

The selenographic coordinates of this feature are 3.8° S, 27.4° E, and it has a diameter of 206 km.

In the northern part of this mare is the small crater Torricelli.

[1] At the southern end is the prominent crater pair of Theophilus and Cyrillus.

On the border between Sinus Asperitatis and the Mare Nectaris is the crater Mädler.