Vitello (crater)


Vitello is a lunar impact crater that lies along the southern edge of the small Mare Humorum, in the southwest part of the Moon's near side. It was named after 13th century Polish theologian and physicist Vitello. It lies just to the east of the lava-flooded crater Lee. To the northeast along the edge of the lunar mare is the Rupes Kelvin, an irregular fault line.

Description

This crater has a low, roughly circular rim with a sharp edge. The interior floor is irregular, rugged and hilly, with a smaller, concentric crater offset to the east of the midpoint. A low ridge projects out from the northwest rim into the mare.
Vitello was once believed to be a caldera rather than an impact crater. In To A Rocky Moon, lunar geologist Don E. Wilhelms summarized: It "is a Saari-Shorthill infrared hotspot, is fractured, and is blanketed and surrounded by a dark deposit. If there is a caldera on the moon, this ought to be it." However, Lunar Orbiter 5 acquired high-resolution images of the interior and geologists noted that the fractures were filled with boulders which caused the infrared anomaly, and so volcanic heat was not escaping from Vitello. Wilhelms concluded "...if it is a caldera, its activity expired long ago."

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 Vitello.
VitelloLatitudeLongitudeDiameter
A34.1° S41.9° W21 km
B31.1° S35.4° W11 km
C32.4° S42.5° W14 km
D33.2° S41.0° W18 km
E29.2° S35.8° W7 km
G32.3° S37.6° W10 km
H32.8° S43.0° W12 km
K31.9° S37.6° W13 km
L31.6° S35.3° W7 km
M32.4° S36.0° W7 km
N32.1° S36.1° W5 km
P31.2° S38.4° W9 km
R33.0° S37.0° W3 km
S30.8° S35.2° W6 km
T33.8° S39.6° W9 km
X32.2° S40.6° W8 km