[1] This formation is located about one crater diameter to the southwest of the smaller Das.

This crater is longer to the southeast by about an extra 5 km, giving this feature an egg-shaped outline.

The interior floor is uneven, particularly toward the southeastern end.

To the southeast of Mariotte is the large crater Chebyshev.

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Mariotte.