Russell is the
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 Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...
-flooded remains of 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 depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...
. It is located in the western part of the
Oceanus Procellarum
Oceanus Procellarum ( ; from ) 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 Procellarum is the largest of the maria ("s ...
, close to the western lunar limb. As a result, it appears oblong-shaped due to foreshortening.
The south-southwestern rim of Russell overlaps the larger rim of the lava-flooded crater
Struve, and together the two crater rims form a figure-8 outline with a wide gap where they are joined. To the east of Russell is
Briggs, and to the southeast, adjacent to
Struve, is the lava-flooded remains of a crater called
Eddington Eddington or Edington may refer to:
People
*Eddington Varmah, Liberian politician
*Eddington (surname), people with the surname
Places
Australia
* Eddington, Victoria
United Kingdom
* Eddington, Berkshire
* Eddington, Cambridge
* Eddi ...
.
The rim of Russell is heavily worn and irregular in form, with multiple crater impacts overlying the wall. The largest of these is Briggs A on the eastern rim. To the north of Russell are the flooded remnants of several smaller craters. Russell's lava-flooded floor is flat and level with the surrounding
mare
A mare is an adult female horse or other equidae, equine. In most cases, a mare is a female horse over the age of three, and a filly is a female horse three and younger. In Thoroughbred horse racing, a mare is defined as a female horse more th ...
. It lacks a central peak.
In the past this crater was sometimes designated as Otto Struve A, or just assumed to be part of the larger Struve. The crater Eddington to the southeast has also been designated as Otto Struve A on old lunar maps.
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 Russell.
See also
*
1762 Russell
1762 Russell, provisional designation , is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered by the Indiana Asteroid Program at Goethe Link Observatory near Brookly ...
, asteroid
*
Russell (Martian crater)
Russell may refer to:
People
* Russell (given name)
* Russell (surname)
* Lady Russell (disambiguation)
* Lord Russell (disambiguation)
** Bertrand Russell
*Justice Russell (disambiguation)
Places
*Russell Island (disambiguation)
*Mount Russel ...
References
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Impact craters on the Moon