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Avicenna (crater)

Avicenna
Clementine mosaic
Coordinates39°38′N 97°17′W / 39.63°N 97.28°W / 39.63; -97.28
Diameter72.99 km (45.35 mi)
DepthUnknown
Colongitude98° at sunrise
EponymAvicenna
Oblique view facing south
Oblique view from Lunar Orbiter 4

Avicenna is a lunar impact crater that lies on the far side of the Moon, just beyond the western limb on the northern rim of the Lorentz basin. It is named after the Persian polymath Avicenna. It lies to the north-northwest of the larger crater Nernst, and to the southeast of Bragg.

The northern half of Avicenna has been obliterated by subsequent, overlapping impacts. The southern and southeastern rim is worn and eroded, but the outline can still be discerned. There is a small crater lying across the southern rim, although this formation is equally worn. Several small craters lie across the southern extent of Avicenna's floor.

Prior to formal naming by the IAU in 1970,[1] Avicenna was called Crater 180.[2]

  1. ^ Avicenna, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
  2. ^ Lunar Farside Chart (LFC-1A), 2nd Edition October 1967

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