It is in a heavily bombarded section of the surface, and much of its outer rim is overlain by smaller craters.

What remains of the rim forms a rounded, somewhat irregular edge to the crater depression.

The interior surface is more level compared to the rugged terrain surrounding it.

The crater was formally named by the IAU in 1970 after American astronomer James F.

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