Krieger (crater)

(Redirected from Rocco (crater))

Krieger is a lunar impact crater on the eastern part of the Oceanus Procellarum. It is located to the north-northwest of the flooded crater Prinz, and north-northeast of the prominent ray crater Aristarchus. To the northwest lies the small Wollaston. The crater was formally named in 1935.[1]

Krieger
Apollo 15 image
Coordinates29°01′N 45°37′W / 29.02°N 45.61°W / 29.02; -45.61
Diameter22.87 km (14.21 mi)
Depth1.1 km
Colongitude46° at sunrise
EponymJohann N. Krieger
Grieger area in selenochromatic format holding some normal (yellow)/pyroclastic(red) selenochromatic landmarks
Another Apollo 15 image

In the past the floor of Krieger has been flooded by basaltic lava, leaving only a low, circular, somewhat polygonal ridge formed by the rim. The southern rim is broken across by the small Van Biesbroeck, and there is a small gap in the western rim. A meandering rille leads away from this break toward the northwest.

Krieger is a crater of Upper (Late) Imbrian age.[2]

Nearby craters

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Two tiny craters next to the eastern rim have been designated Rocco and Ruth. Rocco was previously designated as Krieger D before being named by the IAU.

Crater Longitude Latitude Diameter Name source
Rocco 28.9° N 45.0° W 5 km Italian masculine name
Ruth 28.7° N 45.1° W 3 km Jewish feminine name

The nearby surface to the southwest contains a number of rilles belonging to the Rimae Aristarchus and Rimae Prinz rille systems. Further to the east-southeast are the Montes Harbinger mountains.

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 Krieger.

Krieger Latitude Longitude Diameter
C 27.7° N 44.6° W 4 km

The following craters have been renamed by the IAU.

References

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  1. ^ "Krieger". Gazetteer of Planetary Nomenclature. IAU/NASA/USGS. Retrieved 6 September 2023.
  2. ^ The geologic history of the Moon. USGS Professional Paper 1348. By Don E. Wilhelms, John F. McCauley, and Newell J. Trask. U.S. Government Printing Office, Washington: 1987. Table 11.2.
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