Wallace (lunar crater)

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Wallace
Wallace crater AS17-M-2908.jpg
Apollo 17 Mapping Camera image
Coordinates 20°18′N8°42′W / 20.3°N 8.7°W / 20.3; -8.7
Diameter 26 km
Depth 160 m
Colongitude 9° at sunrise
Eponym Alfred R. Wallace
The crater area in selenochromatic Image (Si) with some landmarks (yellow/normal, red/pyroclastic). Kepler-Manilius Si.jpg
The crater area in selenochromatic Image (Si) with some landmarks (yellow/normal, red/pyroclastic).
Wallace crater at the terminator. Apollo 17 image Wallace crater AS17-153-23591.jpg
Wallace crater at the terminator. Apollo 17 image

Wallace is the remains of a lunar impact crater that has been flooded by lava. It was named after British natural historian Alfred Russel Wallace. [1] It lies in the southeastern part of Mare Imbrium, to the northeast of the crater Eratosthenes. The crater rim forms a somewhat polygonal outline, and is broken in the southeast. The floor is flat and devoid of significant features, but it is overlain by ray material from Copernicus to the southwest. The rim ascends to an altitude of 0.4 km above the lunar mare.

Contents

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 Wallace.

WallaceLatitudeLongitudeDiameter
A19.2° N5.6° W4 km
C17.6° N6.4° W5 km
D17.9° N5.7° W4 km
H21.3° N9.1° W2 km
K19.3° N6.8° W3 km
T21.9° N5.1° W2 km

The following craters have been renamed by the IAU.

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Wallace Wallace - LROC - WAC.JPG
Wallace
Wallace crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1 Wallace lunar crater map.jpg
Wallace crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

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References

  1. "Wallace (lunar crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.