Firsov (crater)

Firsov (crater)

Apollo 16 Mapping Camera image. Firsov below right of center, Firsov V above left of center
Coordinates	4°30′N 112°12′E / 4.5°N 112.2°ECoordinates: 4°30′N 112°12′E / 4.5°N 112.2°E
Diameter	51 km
Depth	Unknown
Colongitude	248° at sunrise
Eponym	Georgij F. Firsov

Oblique view facing southwest, also from Apollo 16

High-albedo swirls east of Firsov

Firsov is a lunar crater on the far side of the Moon. It is located to due south of the crater Lobachevskiy, and to the northwest of Abul Wáfa. The circular rim of this crater has a small outward bulge along the southern edge, and smaller bulges along the western side. The inner walls have slumped to form talus piles along the base. The low-albedo interior floor is nearly level and featureless.

Just east of Firsov, within unnamed, flat-floored crater is an unusual swirl pattern of high albedo, similar to the floor of Mare Marginis and to the Reiner Gamma feature.

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 Firsov.

Firsov	Latitude	Longitude	Diameter
K	3.1° N	113.0° E	58 km
P	2.9° N	111.1° E	15 km
Q	2.3° N	110.0° E	25 km
S	3.6° N	109.8° E	96 km
T	4.1° N	108.6° E	26 km
V	5.1° N	110.7° E	44 km

• 

  Firsov Q crater from Apollo 11

References

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