Krieger is a
lunar
Lunar most commonly means "of or relating to the Moon".
Lunar may also refer to:
Arts and entertainment
* ''Lunar'' (series), a series of video games
* "Lunar" (song), by David Guetta
* "Lunar", a song by Priestess from the 2009 album ''Prior t ...
impact crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters ...
on the eastern part of the
Oceanus Procellarum
Oceanus Procellarum ( la, Ōceanus procellārum, lit=Ocean of Storms) is a vast lunar mare on the western edge of the near side of the Moon. It is the only one of the lunar maria to be called an "Oceanus" (ocean), due to its size: Oceanus Proc ...
. 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.
In the past the floor of Krieger has been flooded by
basalt
Basalt (; ) is an aphanite, aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the planetary surface, surface of a terrestrial ...
ic
lava
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or un ...
, leaving only a low, circular, somewhat
polygon
In geometry, a polygon () is a plane figure that is described by a finite number of straight line segments connected to form a closed ''polygonal chain'' (or ''polygonal circuit''). The bounded plane region, the bounding circuit, or the two toge ...
al ridge formed by the rim. The southern rim is broken across by the small
Van Biesbroeck Van Biesbroeck may refer to:
People with the surname Van Biesbroeck
* George Van Biesbroeck (1880-1974) - astronomer
* Jules Evarist Van Biesbroeck (1848-1920)- artist
* Jules Pierre Van Biesbroeck (1873-1965) - artist
* Marguerite Van Biesbr ...
, and there is a small gap in the western rim. A meandering
rille
Rille (German for 'groove') is typically used to describe any of the long, narrow depressions in the surface of the Moon that resemble channels. The Latin term is ''rima'', plural ''rimae''. Typically, a rille can be several kilometers wi ...
leads away from this break toward the northwest.
Nearby craters
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
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach ...
.
The nearby surface to the southwest contains a number of
rille
Rille (German for 'groove') is typically used to describe any of the long, narrow depressions in the surface of the Moon that resemble channels. The Latin term is ''rima'', plural ''rimae''. Typically, a rille can be several kilometers wi ...
s belonging to the Rimae Aristarchus and Rimae Prinz rille systems. Further to the east-southeast are the
Montes Harbinger mountains.
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 Krieger.
The following craters have been renamed by the
IAU
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach ...
.
* Krieger B — ''See''
Van Biesbroeck (crater)
Van Biesbroeck is a small lunar impact crater that interrupts the southern rim of the lava-flooded crater Krieger, in the Oceanus Procellarum. The crater is circular and symmetrical, with sloping inner walls that run down to a small interior flo ...
.
References
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External links
LTO-39A1 Krieger— L&PI
topographic map
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historic ...
of the crater and vicinity.
39A1S1(50) Van Biesbroeck detailed map of Krieger and Van Biesbroeck
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Impact craters on the Moon