Unlike Deimos, Phobos is heavily cratered, with one of the craters near the equator having a central peak despite the moon's small size. The most prominent of these is the crater Stickney, a large impact crater some in diameter, which takes up a substantial proportion of the moon's surface area. As with Mimas' crater Herschel, the impact that created Stickney must have nearly shattered Phobos.
Unlike Deimos, Phobos is heavily cratered, with one of the craters near the equator having a central peak despite the moon's small size. The most prominent of these is the crater Stickney, a large impact crater some in diameter, which takes up a substantial proportion of the moon's surface area. As with Mimas' crater Herschel, the impact that created Stickney must have nearly shattered Phobos.