Green is a lunar impact crater on the Moon's far side. It was named after British mathematician and physicist George Green in 1970.[1] Prior to that, it was designated Crater 216.[2] It lies just to the west of the huge walled plain Mendeleev, and is nearly joined with the west-northwestern edge of the crater Hartmann.

Green
Lunar crater Green from Apollo 16. NASA photo.
Coordinates4°06′N 132°54′E / 4.1°N 132.9°E / 4.1; 132.9
Diameter65 km
Colongitude228° at sunrise
EponymGeorge Green
Oblique view from Apollo 11, mainly showing differences in color resulting from albedo, rather than color differences from sun angle

Description

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The crater has not been significantly eroded although a few tiny craterlets lie along the edge and inner wall. The perimeter is nearly circular, but has an outward bulge along the eastern side with some indications of a landslip. The inner sides display some terrace structures, particularly to the northeast. At the midpoint of the relatively level interior floor is a central ridge. The floor is more level along the western half, with some low rises in the east. There are only a few tiny craterlets on the interior.

 
Oblique view of the central peak from Apollo 10

Satellite craters

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

Green Latitude Longitude Diameter
M 0.9° N 132.9° E 37 km
P 1.0° N 131.8° E 21 km
Q 2.8° N 131.7° E 16 km
R 3.4° N 131.0° E 33 km

Green M crater has a ray system and is consequently mapped as part of the Copernican system.[3] Green M was well studied from Apollo 10 photographs.[4]

References

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  1. ^ "Green (lunar crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. ^ Lunar Farside Chart (LFC-1A)
  3. ^ Stratigraphy of Lunar Craters, Don E. Wilhelms and Charles J. Byrne, January 23, 2009
  4. ^ Analysis of Apollo 10 Photography and Visual Observations, NASA Special Puplication 232, 1971. Compiled by NASA Manned Spacecraft Center.


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