Fermat (crater)
| Diameter | 39 km |
|---|---|
| Depth | 2.0 km |
| Colongitude | 20° at sunrise |
| Eponym | Pierre de Fermat |
Fermat is a lunar impact crater located to the west of the Rupes Altai escarpment. To the west-southwest is the larger Sacrobosco crater, and to the southwest is the irregular Pons crater.
The rim of Fermat crater is worn and somewhat irregular, but still possesses an outer rampart. The north rim is indented by a double crater formation that includes 'Fermat A'. The floor is relatively flat and does not have a central rise.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Fermat crater.
| Fermat | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 21.8° S | 19.6° E | 17 km |
| B | 23.0° S | 21.1° E | 11 km |
| C | 21.0° S | 18.5° E | 14 km |
| D | 20.1° S | 18.0° E | 13 km |
| E | 19.9° S | 19.9° E | 7 km |
| F | 22.1° S | 20.2° E | 5 km |
| G | 19.4° S | 20.0° E | 7 km |
| H | 23.1° S | 20.7° E | 5 km |
| P | 23.6° S | 19.3° E | 37 km |
References
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