Phobos and Deimos

Phobos and Deimos are two small moons in orbit around Mars. They are scarred with many craters and are very irregular in shape. Phobos, in it's longest dimension is 27 kilometers long and Deimos in it's longest dimension os 15 kilometers long. Phobos is 3000 miles above the Martian surface and orbits in about 7 hours. Deimos orbits in about 30 hours. Phobos and Deimos are probably fragments of larger objects brocken apart in a collision.