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| Coordinates | 5°24′S 19°00′E / 5.4°S 19.0°E |
|---|---|
| Diameter | 20 km |
| Depth | 2.8 km |
| Colongitude | 343° at sunrise |
| Eponym | Alfraganus |
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Alfraganus is a small lunar impact crater that lies in the rugged highland region to the southwest of the Mare Tranquillitatis. It is named after the Muslim astronomer Alfraganus.[1] Northwest of Alfraganus is the crater Delambre, and to the south is the irregular Zöllner. The rim of Alfraganus is circular and retains a sharp edge that has not received a significant amount of wear due to subsequent impacts. The interior floor is roughly half the diameter of the crater rim.
- ^ "Alfraganus". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.