Pomortsev is a small
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 crater ...
that is located in the eastern part of the Moon's near side. It was named after Russian rocketry scientist
Mikhail Pomortsev
Mikhail Mikhaylovich Pomortsev (July 24, 1851, Vasilyevshchina – July 2, 1916, all n.s.) was a Russian military officer, meteorologist and engineer. He invented a Nephoscope in 1894. A lunar crater Pomortsev is named after him.
One of ...
.
It lies on the eastern edge of
Mare Spumans
Mare Spumans (Latin ''spūmāns'', the "foaming sea") is a lunar mare located just south of Mare Undarum on the lunar near side. It is one of the many elevated lakes contained in the Crisium basin, surrounding Mare Crisium. The surrounding basi ...
, to the southwest of the crater
Dubyago. This formation was previously designated Dubyago P. One crater diameter to the north is the smaller
Stewart.
The nearly featureless interior of this crater has been resurfaced by
basalt
Basalt (; ) is an 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 surface of a rocky planet or moon. More than 90 ...
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 a dark floor with an
albedo
Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that refl ...
that nearly matches the
lunar mare
The lunar maria (; singular: mare ) are large, dark, basaltic plains on Earth's Moon, formed by ancient asteroid impacts on the far side on the Moon that triggered volcanic activity on the opposite (near) side. They were dubbed , Latin for 'seas' ...
to the west. The crater it roughly circular, with slight outward bulges to the north and northeast. The inner wall is wider along the southern half of the rim, and at its narrowest along the northwestern rim where the crater makes contact with Mare Spumans.
References
*
*
*
*
*
*
*
*
*
*
*
External links
{{Commons category
LTO-62C3 Pomortsev— 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 histori ...
Impact craters on the Moon