Lacchini (crater)
Encyclopedia
Lacchini is an impact crater
on the far side of the Moon
. It is located in the northern hemisphere
, just behind the northwestern limb of the visible Moon. This part of the lunar surface can sometimes be viewed under favorable conditions of libration
and illumination, but at such times the crater is only seen from the edge.
Less than one crater diameter to the east is the larger crater Bragg
. To the north is Stefan
, and farther to the southeast is the walled plain Lorentz
. Due west of Laccini is Landau
, another walled plain.
The outer rim of Lacchini is roughly circular, with outward bulges to the south and east. The edge is sharp and not significantly eroded. The inner walls have slumped around much of the circumference, forming an irregular ring of talus
about the interior floor. There are some low ridges near the mid-point and in the eastern half of the floor.
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...
on the far side 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 in the northern hemisphere
Sphere
A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Like a circle in two dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point...
, just behind the northwestern limb of the visible Moon. This part of the lunar surface can sometimes be viewed under favorable conditions of libration
Libration
In astronomy, libration is an oscillating motion of orbiting bodies relative to each other, notably including the motion of the Moon relative to Earth, or of Trojan asteroids relative to planets.-Lunar libration:...
and illumination, but at such times the crater is only seen from the edge.
Less than one crater diameter to the east is the larger crater Bragg
Bragg (crater)
Bragg is an ancient lunar crater that is located on the far side of the Moon, just beyond the northwest limb. This formation has been heavily eroded and reshaped by subsequent impacts, leaving an irregular depression in the surface...
. To the north is Stefan
Stefan (crater)
Stefan is a lunar crater on the far side of the Moon, just beyond the northwestern limb. Attached to the western rim is the slightly smaller crater Wegener, and close to the eastern rim is Rynin....
, and farther to the southeast is the walled plain Lorentz
Lorentz (crater)
Lorentz is a huge lunar crater that lies just beyond the northwest limb of the Moon, in a region that is brought into sight of the Earth during favorable librations. This formation is nearly as large as the Mare Nectaris on the near side of the Moon, although it has not been submerged by lava as...
. Due west of Laccini is Landau
Landau (crater)
Landau is a large lunar crater that is located in the northern hemisphere on the far side of the Moon. It was named after physicist Lev Landau. The crater Wegener is attached to the northeastern rim. Attached to the southeastern rim is Frost....
, another walled plain.
The outer rim of Lacchini is roughly circular, with outward bulges to the south and east. The edge is sharp and not significantly eroded. The inner walls have slumped around much of the circumference, forming an irregular ring of talus
Scree
Scree, also called talus, is a term given to an accumulation of broken rock fragments at the base of crags, mountain cliffs, or valley shoulders. Landforms associated with these materials are sometimes called scree slopes or talus piles...
about the interior floor. There are some low ridges near the mid-point and in the eastern half of the floor.