Yakovkin (crater)
Encyclopedia
Yakovkin is a lunar
crater
that lies very near the southwest limb of the Moon
. It is located to the northwest of the crater Pingré
, and was designated
Pingré H before it was named by the IAU
. The proximity of this crater to the limb hinders observation from the Earth
, and gives it a foreshortened appearance.
The uneven rim of this crater has a polygon
al shape, rather than forming a simple circle. The interior floor has been flooded by lava
, leaving a relatively small inner wall. The interior floor is nearly featureless, with only a few tiny craterlets marking the surface. The surrounding terrain appears to have been resurfaced, and is marked only by small or shallow craters. The terrain farther to the northeast is considerably more rough and uneven.
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
that lies very near the southwest limb of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...
. It is located to the northwest of the crater Pingré
Pingré (crater)
Pingré is a lunar impact crater that is located near the southwest limb of the Moon, beyond the large crater Phocylides. It lies to the northwest of the huge walled basin Bailly, and to the east of the smaller Graff...
, and was designated
Pingré H before it was named by the IAU
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...
. The proximity of this crater to the limb hinders observation from the Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
, and gives it a foreshortened appearance.
The uneven rim of this crater has a polygon
Polygon
In geometry a polygon is a flat shape consisting of straight lines that are joined to form a closed chain orcircuit.A polygon is traditionally a plane figure that is bounded by a closed path, composed of a finite sequence of straight line segments...
al shape, rather than forming a simple circle. The interior floor has been flooded by lava
Lava
Lava refers both to molten rock expelled by a volcano during an eruption and the resulting rock after solidification and cooling. This molten rock is formed in the interior of some planets, including Earth, and some of their satellites. When first erupted from a volcanic vent, lava is a liquid at...
, leaving a relatively small inner wall. The interior floor is nearly featureless, with only a few tiny craterlets marking the surface. The surrounding terrain appears to have been resurfaced, and is marked only by small or shallow craters. The terrain farther to the northeast is considerably more rough and uneven.