This is an eroded crater with a small crater overlying the south-southeastern outer rim. The southern rim is overlain by material deposits, most likely ejecta from another impact. The remainder of the rim has survived fairly well, and is marked only by tiny craterlets and general wear. The interior floor is relatively level with a few tiny craterlets marking the surface.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Seidel.