Stickney is the largest crater on Phobos. Phobos is a satellite of Mars. It is at 1°N 49°W / 1°N 49°W / 1; -49Coordinates: 1°N 49°W / 1°N 49°W / 1; -49 and is 9 km (5.6 mi) in diameter. It makes a large part of the moon's surface.
It is named after Chloe Angeline Stickney Hall, wife of Phobos's discoverer, Asaph Hall.