|Lat: 14.1°N, Long: 91.1°E, Diam: 58 km, Depth: km, Rükl: (farside)|
left: Lunar Orbiter LO4-018-H2 . right: LROC
The lava-flooded remnant of what was once a grand crater. First Goddard formed on it's western edge, and later magmas rose up through fissures and flooded the crater, covering the central peak and terraces, making it part of Mare Marginis. At some point bright spots that are pieces of the Marginis Swirl developed on the mare lavas, and small impacts pitted the surface. The crater is just barely on the farside but can be easily spotted with good libration. - tychocrater Jun 23, 2007
Ibn Yunus (950?-1009) was an important Egyptian mathematician and astronomer whose works are noted for being ahead of their time, having been based on almost modern-like meticulous calculations and attention to detail.