Danjon (crater)

Danjon is a lunar impact crater on the far side of the Moon. It lies less than a crater diameter to the east-southeast of the larger crater Langemak. To the east-northeast of Danjon is the crater Perepelkin, and due south lies the walled plain Fermi.

Danjon

Oblique Apollo 17 Mapping Camera image of Danjon crater (larger) and D'Arsonval crater (below center), facing south
Coordinates	11.42°S 123.90°E / -11.42; 123.90
Diameter	69.3 km (43.1 mi)
Depth	4.7 km (2.9 mi)[1][2]
Colongitude	237° at sunrise
Eponym	André Danjon

Oblique view facing east-northeast, from Apollo 8

The northeastern rim of Danjon is overlain by the smaller crater D'Arsonval. Danjon overlies the southeastern corner of the slightly smaller satellite crater Danjon X. The outer rim of this crater is worn and eroded, particularly at the southern end, and the interior floor is irregular and marked by several small craterlets.

The crater was named after French astronomer André Danjon by the IAU in 1970.^[3]

Satellite craters

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

Danjon	Latitude	Longitude	Diameter
J	12.8° S	125.6° E	23 km
K	13.8° S	125.1° E	17 km
M	13.9° S	124.1° E	12 km
X	10.0° S	122.8° E	65 km

References

1. LTO-83C4 Delporte, Lunar Topographic Orthophotomap (LTO) Series, Publisher: Defense Mapping Agency, Scale: 1:250,000.
2. LTO-83C1 Danjon, Lunar Topographic Orthophotomap (LTO) Series, Publisher: Defense Mapping Agency, Scale: 1:250,000.
3. Danjon, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)

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