Coordinates | 14°24′S84°13′W / 14.40°S 84.21°W Coordinates: 14°24′S84°13′W / 14.40°S 84.21°W |
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Diameter | 16.69 km |
Depth | Unknown |
Colongitude | 84° at sunrise |
Eponym | André Lallemand |
Lallemand is a small lunar impact crater that lies near the western limb of the Moon, in a region where the visibility is affected by libration effects. Because of its location, when viewed from the Earth the crater is viewed nearly from the side, limiting the amount of detail that can be seen. It lies in the northeast part of a mountain range named the Montes Rook that forms a ring around the enormous Mare Orientale impact basin. To the northeast is the Lacus Autumni and to the northwest lies the Lacus Veris, both forming small lunar maria along the sides of the range.
This is a roughly circular, bowl-shaped crater that lies along the northeastern edge of the Montes Rook. Its interior walls slope down to a small floor at the midpoint. This crater was previously designated Kopff A before being named for French astronomer André Lallemand by the IAU in 1985. [1] Kopff is located to the southwest along the eastern edge of the Mare Orientale.
Nicholson is a lunar impact crater located at the western limb. In this position it is subject to libration, which can limit observation. The crater is also viewed at a very oblique angle, so it is seen from the side when observed from the Earth. It is an irregular, somewhat pear-shaped formation that has an uneven rim due to its location amidst rugged ground. The rim is sharp-edged and the inner wall varies in thickness, being narrower along the northern side and wider at the southern end. The interior floor is rough, small and uneven, with no impacts of significance. There is a small central ridge.
Bowen is a small lunar impact crater that is located to the southwest of the Montes Haemus, on the edge of a small lunar mare named the Lacus Doloris. It was named after American astronomer Ira S. Bowen. It is distinguished only by having a relatively flat floor, rather than being bowl-shaped like most small craters. Bowen was previously designated Manilius A. The crater Manilius is located to the south, at the opposite shore of the Lacus.
Hohmann is a lunar impact crater that lies within the central basin of the Mare Orientale formation, on the farside of the Moon. It is located to the south of the crater Maunder, and to the west of Kopff crater. Due to its proximity to the western lunar limb, this area of the surface is occasionally visible during favorable librations. However the basin is viewed from the side, restricting the amount of detail that can be observed from Earth.
Clausius is a lunar impact crater that is located in the southwest part of the Moon, in the small lunar mare designated Lacus Excellentiae. It is completely enclosed by mare material, although the tiny satellite crater Clausius A lies just to the north. The rim of Clausius is low and sharp, with a slightly oval shape that is longer in the north–south direction. The interior floor has been flooded by basaltic lava, and appears level and featureless with a darker surface that matches the mare surface that surrounds the crater exterior.
Kopff is a lunar impact crater that lies along the eastern edge of the inner Mare Orientale impact basin, on the western limb of the Moon. In this position the crater is seen from on edge from the Earth, and its visibility is affected by libration. This situation makes it difficult to discern much detail about the crater unless it is viewed from orbit.
Golitsyn is a lunar impact crater that lies beyond the western limb on the far side of the Moon. It is located in the southwestern portion of the Montes Rook mountain range that forms one of the rings around the Mare Orientale impact site. The crater is situated in the midst of rugged, irregular terrain that contains only a handful of other significant craters.
Drude is a lunar impact crater that lies on the far side of the Moon, in the rugged Montes Cordillera range that forms the outer ring around the Mare Orientale impact basin. It is located just behind the west-southwest limb, and this area is sometimes brought into sight from Earth during favorable librations. However, even at such times, the crater is viewed from the edge and little detail can be seen.
Maunder is a lunar impact crater that is located on the far side of the Moon, just beyond the western limb. This region is sometimes brought into view during favorable librations, but not much detail can be seen. The crater lies at the northern end of the Mare Orientale, within the ring of mountains named Montes Rook, and it is the largest crater on this lunar mare. To the southeast is the crater Kopff, and due south is the small Hohmann.
Pettit is a lunar impact crater that lies near the western limb of the Moon. It was named after American astronomer Edison Pettit. In this location the crater is viewed nearly from the side by observers on Earth, and visibility can be significantly affected by libration effects.
Daubrée is a lunar impact crater that is located to the southwest of the Mare Serenitatis, just to the west-southwest of the crater Menelaus in the Montes Haemus range. The small lunar mare Lacus Hiemalis lies along the southwest rim of Daubrée. The crater was named after French geologist Gabriel A. Daubrée. It was previously designated Menelaus S.
Focas is a small lunar impact crater that lies on the far side of the Moon, just past the southwestern limb. In this location the crater is occasionally brought into view due to libration, but not much detail can be seen because the crater is viewed from the side.
Lagrange is a lunar impact crater that is attached to the northwestern rim of the crater Piazzi. It lies near the southwestern limb of the Moon, and the appearance is oblong due to foreshortening. To the northwest of this feature is the Montes Cordillera, a ring-shaped mountain range that surrounds the immense Mare Orientale impact basin.
Couder is a small lunar impact crater that is located just behind the western limb of the Moon, in a region of the surface that is brought into view during favorable librations. It lies on the inner foothills of the Montes Cordillera, a ring-shaped mountain range that surrounds the Mare Orientale impact basin.
Schlüter is a lunar impact crater that is located near the western limb of the Moon's near side. It lies along the northwestern face of the Montes Cordillera mountain range that encircles the Mare Orientale. Nearly attached to the eastern rim is the damaged crater Hartwig.
Wright is a lunar impact crater that is located near the western limb of the Moon. It lies on the irregular plain between the Montes Cordillera and Montes Rook, two ring-shaped mountain ranges that surround the Mare Orientale. Just to the southeast of the crater is the slightly larger crater Shaler. To the north of Wright is the crater Pettit.
Chalonge is a lunar impact crater that is located on the far side of the Moon. It lies to the southwest of the larger crater Lewis, in the outer skirt of ejecta that surrounds the Mare Orientale impact basin. To the southeast are the Montes Cordillera, a ring of mountains that encircle the Mare Orientale formation.
Shuleykin is a small lunar impact crater that lies to the south of Mare Orientale, within the ring-shaped Montes Rook. It is located just on the far side of the Moon, but this area can be viewed from the Earth during periods of favorable libration and lighting, although it can only be seen from the edge.
Lowell is a lunar impact crater that lies just beyond the western limb of the Moon. It is embedded within the northwestern part of the Montes Rook mountain ring of the Mare Orientale impact basin. This portion of the Moon's far side is sometimes brought into view of the Earth during periods of favorable libration and lighting, although it is only seen from the edge.
Rocca is a lunar impact crater that is located near the western limb of the Moon. It lies to the northwest of the flooded crater Crüger, and to the west of the Montes Cordillera. Just to the east-southeast of Rocca is the small Lacus Aestatis, a small lunar mare.