Steno (lunar crater)

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Steno crater LRO WAC.jpg
LRO image
Coordinates 32°48′N 161°48′E / 32.8°N 161.8°E / 32.8; 161.8Coordinates: 32°48′N 161°48′E / 32.8°N 161.8°E / 32.8; 161.8
Diameter 31 km
Depth Unknown
Colongitude 199° at sunrise
Eponym Nicolas Steno
Clementine image

Steno is a relatively small lunar impact crater that is located in the northern hemisphere on the Moon's far side. It lies to the south-southwest of the slightly larger crater Stearns, a much younger and less worn formation. Farther to the northwest of Steno is Appleton, and to the east is Nušl.

This is a worn crater formation that has a circular outer rim that remains relatively well-defined. The rim edge is marked only by a few tiny craterlets. The interior floor and inner walls are nearly featureless, except for a few faint groove marks and some tiny craterlets. It is otherwise an undistinguished formation.

Satellite craters[edit]

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

Steno Latitude Longitude Diameter
N 31.3° N 161.4° E 20 km
Q 29.3° N 157.8° E 29 km
R 31.3° N 158.9° E 17 km
T 32.7° N 159.7° E 37 km
U 33.1° N 158.3° E 27 km