Lassell (lunar crater)
Lunar Orbiter 4 image | |
| Coordinates | 15°30′S 7°54′W / 15.5°S 7.9°W |
|---|---|
| Diameter | 23 km |
| Depth | 0.9 km |
| Colongitude | 8° at sunrise |
| Eponym | William Lassell |
Lassell is a small lunar impact crater that is located in the eastern part of the Mare Nubium. It was named after British astronomer William Lassell, who discovered Uranian moons Ariel and Umbriel, among other achievements.
Lassell lies to the west of the crater Alpetragius and southwest of Alphonsus.