Alfraganus (crater)

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 Arab 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
Coordinates5.4°S 19.0°E / -5.4; 19.0
Diameter20 km
Depth2.8 km
Colongitude343° at sunrise
EponymAlfraganus
The crater (to the bottom) in a Selenochromatic Image (Si)
Oblique view of Alfraganus from Apollo 16 Metric Camera
Oblique view of Alfraganus from Apollo 16 Panoramic Camera

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Alfraganus.

Alfraganus Latitude Longitude Diameter
A 3.0° S 20.3° E 13 km
C 6.1° S 18.1° E 11 km
D 4.0° S 20.1° E 8 km
E 4.6° S 19.0° E 4 km
F 3.5° S 20.8° E 9 km
G 2.6° S 21.2° E 6 km
H 4.4° S 19.1° E 13 km
K 5.3° S 19.5° E 4 km
M 5.6° S 19.6° E 3 km

References

  1. "Alfraganus". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
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