Webb (crater)

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Webb
Webb crater
Webb from Lunar Orbiter 1. NASA/L&PI image.
Coordinates 0°54′S 60°00′E / 0.9°S 60.0°E / -0.9; 60.0Coordinates: 0°54′S 60°00′E / 0.9°S 60.0°E / -0.9; 60.0
Diameter 21 km
Depth 0.8 km
Colongitude 300° at sunrise
Eponym Thomas W. Webb
Oblique view facing west from Apollo 11, showing Webb at center, with Webb H at left, Webb D at top left, and Webb B above right of Webb itself.

Webb is a small lunar impact crater that is located near the eastern edge of the Mare Fecunditatis, in the eastern part of the Moon near the equator. It is to the north of the prominent crater Langrenus, and west of Maclaurin and the smaller Hargreaves, it is also north-northeast of Naonobu.

Satellite craters of Webb

It is named for British astronomer Thomas William Webb.

The interior of Webb is relatively dark compared with the inner walls of the rim, and it has a low hill at the midpoint of the interior. On the lunar mare to the north is a faint marking of a ray system that appears to radiate from this crater.

West of the crater is a wrinkly ridge known as Dorsa Andrusov

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 Webb. Three of its satellite craters are larger than itself, Webb P located to the northwest is partly a ghost crater in its south, also Webb C located in the east is largely a ghost crater.

Webb and its satellite crater taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1
Webb Latitude Longitude Diameter
B 0.8° S 58.4° E 6 km
C 0.3° N 63.8° E 34 km
D 2.3° S 57.6° E 7 km
E 1.0° N 61.1° E 7 km
F 1.5° N 61.0° E 9 km
G 1.7° N 61.2° E 9 km
H 2.1° S 59.5° E 10 km
J 0.6° S 64.0° E 24 km
K 0.7° S 62.9° E 21 km
L 0.1° N 62.7° E 7 km
M 0.2° S 63.8° E 5 km
N 0.3° S 63.6° E 4 km
P 2.3° S 57.8° E 36 km
Q 1.0° S 61.2° E 5 km
U 1.8° N 56.3° E 6 km
W 3.0° N 58.2° E 8 km
X 3.2° N 58.3° E 8 km

The following craters have been renamed by the IAU.

References[edit]