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Mendel-Rydberg Basin
The Mendel-Ryberg Basin is a Nectarian impact basin on the southwestern limb of the moon. It is named after the crater Mendel on the west margin and the smaller crater Rydberg north of the center of the basin. The basin is due south of the larger, younger Orientale basin, and ejecta and other geomorphological effects from the younger basin have overprinted the older one. At the center is a mass concentration (mascon), or gravitational high. The mascon was first identified by Doppler tracking of the Lunar Prospector spacecraft. The existence of the basin was confirmed by the GRAIL spacecraft. Other craters within the basin include Guthnick, De Roy, Arrhenius, Yakovkin, Graff, Andersson, Chadwick, Fényi, Blanchard, and Baade. Vallis Baade cuts tangentially across the northeast rim of the basin. Nearby craters just outside the outer rim include Drude, Chant, Steklov, Lippmann, Petzval, Chappe, Pilâtre, Hausen, Pingré, and Inghirami. The large crater Bail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Orbiter 4
Lunar Orbiter 4 was a robotic U.S. spacecraft, part of the Lunar Orbiter program, Lunar Orbiter Program, designed to orbit the Moon, after the three previous orbiters had completed the required needs for Project Apollo, Apollo mapping and site selection. It was given a more general objective, to "perform a broad systematic photographic survey of lunar surface features in order to increase the scientific knowledge of their nature, origin, and processes, and to serve as a basis for selecting sites for more detailed scientific study by subsequent orbital and landing missions". It was also equipped to collect selenodetic, radiation intensity, and micrometeoroid impact data. Mission Summary The spacecraft was placed in a Free-return trajectory, cislunar trajectory and injected into an elliptical near polar high lunar orbit for data acquisition. The orbit was with an inclination of 85.5 degrees and a period of 12 hours. After initial photography on May 11, 1967 problems started occu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chadwick (crater)
Chadwick is a lunar impact crater that lies on the far side of the Moon's surface, just beyond the southwestern limb. It is located to the northwest of the crater De Roy, and was previously designated De Roy X before being given its current name by the IAU. This region of the lunar surface lies at the southern end of the ejecta blanket that surrounds the Mare Orientale impact basin. Chadwick is roughly circular with a sharp-edged rim. The inner wall is somewhat wider to the south-southeast, giving the crater a slight outward bulge toward De Roy. The rim has not been significantly worn, and is not marked by any impacts of note. The interior surface has a somewhat uneven appearance. This crater lies within the Mendel-Rydberg Basin, a 630 km wide impact basin of Nectarian The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. It is the period during which the Nectaris Basin and other major basins were formed by large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. Due to its location, this crater appears foreshortened when viewed from the Earth. The outer rim of this crater has become worn due to minor impacts, leaving the features rounded and irregular. The wall is nearly disintegrated in the southeast, and is overlain by a small crater along the eastern rim. The rim is also low and slumped to the northwest. The interior floor is relatively level, but marked by several small craters, which may be secondaries from Hausen or a more distal crater. These craters occur near the midpoint of the floor where a central peak may once have existed. Pingré lies to the southeast of the Mendel-Rydberg Basin, a 630 km wide impact basin of Nectarian age. Satellite craters By convention these features are identified on lunar maps ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hausen (crater)
Hausen is a large lunar impact crater that lies along the south-southwestern limb of the Moon. The visibility of this crater is significantly affected by libration effects, although even under the best of conditions it is viewed nearly from on edge. It lies along the western edge of the immense walled plain Bailly. To the northeast is the crater Pingré on the near side, and to the north is the Arrhenius just on the far side of the lunar limb. The rim of this crater is generally circular, with an outward bulge to the south-southeast. The inner wall is terraced at the northern and southern ends, and is more irregular along the eastern and western flanks. The rim along the east and southeast flanks displays slumping, producing a sharp edge. It is not significantly eroded or overlaid by craters, with only a single small craterlet along the southwest rim. The interior floor is generally level, with a few sites of rough terrain. There is a complex formation of central peaks offset ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilâtre (crater)
Pilâtre is a lunar impact crater near the southwestern limb of the Moon. It is located just to the north-northwest of the much larger walled plain Hausen. The satellite crater Pingré S is attached to the eastern rim, with Pingré itself located farther to the northeast. Just to the west-southwest is Chappe, a formation of similar dimension to Pilâtre. Due to its location, this crater is viewed almost from the edge from the Earth, limiting the amount of detail that can be observed. This part of the surface is also subject to libration, and the crater can sometimes be completely hidden from view. The rim of this crater has been heavily worn through impact erosion, leaving an irregular rise that is marked by a number of minor impacts. There is a slight outward bulge in the western part of the rim, and the inner wall is wider in that part of the crater. The interior floor is somewhat irregular, and contains a small craterlet near the southeastern inner wall. This crater was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chappe (crater)
Chappe is a lunar impact crater that lies along the southwestern limb of the Moon. It is nearly attached to the northern limb of the walled plain Hausen, and an equal distance from the crater Pilâtre. To the north-northwest is Blanchard. This crater lies along the outer rampart of the much larger Hausen, and is surrounded by uneven, hummocky terrain. The rim is roughly circular, with a small crater lying along the eastern edge. The inner walls and interior floor are uneven, particularly in the western half. This crater was originally designated Hausen A before being assigned its current name by the IAU in 1994. Chappe lies to the south of the Mendel-Rydberg Basin The Mendel-Ryberg Basin is a Nectarian impact basin on the southwestern limb of the moon. It is named after the crater Mendel on the west margin and the smaller crater Rydberg north of the center of the basin. The basin is due south of the la ..., a 630 km wide impact basin of Nectarian age. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petzval (crater)
Petzval is a Lunar craters, lunar impact crater that lies in the southern latitudes of the Moon's Far side (Moon), far side. This crater is located to the south of the larger Lippmann (crater), Lippmann and to the north of Doerfel (crater), Doerfel. It was namer after the Germans of Hungary, Hungarian-German inventor Joseph Petzval. This is a moderately worn crater formation with features that have become rounded and less well defined due to impact erosion. There are only a few small craterlets along parts of the rim and inner wall. Some faded wiktionary:terrace, terrace structures appear along parts of the inner wall to the east and south. Within the interior are small craters in the southwest and northeast sections of the floor. Near the midpoint is a worn central peak. Petzval lies to the southwest of the Mendel-Rydberg Basin, a 630 km wide impact basin of Nectarian age, and it is on the southeast margin of the Pre-Nectarian South Pole-Aitken Basin. Satellite craters By ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lippmann (crater)
Lippmann is a large lunar impact crater in the southern part of the far side of the Moon and so cannot be viewed directly from the Earth. Just to the northeast is the walled plain Mendel, only slightly smaller than Lippmann. To the south-southeast lies the crater Petzval. Lippmann is named after Gabriel Lippmann (1845–1921), a Nobel laureate in physics. As with many lunar formations of this size, Lippmann has been eroded by subsequent impacts. The southeastern part of the rim has been overlain by the satellite crater Lippmann L, which in turn has become worn and eroded. The relatively fresh crater Lippmann Q lies across the southwest rim. The remaining rim has become worn and rounded, with a few surviving terrace-like features and the rim edge having lost their definition. The western and eastern sides of the crater in particular are nearly overlain by ejecta material. The interior floor is relatively level, at least in the western two-thirds, but is marked by several impacts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steklov (crater)
Steklov is a lunar impact crater on the far side of the Moon, past the southwestern limb. It lies in the outer skirt of ejecta from the Mare Orientale impact basin, just to the southwest of the Montes Cordillera ring of mountains. About four crater diameters to the southwest is the slightly smaller crater Chant. The rim of this crater has a sharp edge that has not been eroded by impacts. The inner walls slope directly downwards to the edge of the irregular interior floor. The perimeter of this crater is roughly circular, but has a slight pear shape. There are no impacts of note within the interior. This crater lies to the northwest of the Mendel-Rydberg Basin, a 630 km-wide impact basin of Nectarian The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. It is the period during which the Nectaris Basin and other major basins were formed by large impact events. Ejecta from Nectaris for ... age. References * * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chant (crater)
Chant is a lunar impact crater that is located on the far side of the Moon, behind the southwest limb as seen from the Earth. It lies within the southwestern part of the blanket of ejecta surrounding the Mare Orientale, beyond the Montes Cordillera mountain ring. To the west-northwest is the large walled plain Blackett. Southward is the crater Mendel. This is a nearly circular crater with a slight outward bulge in the northeast wall. The outer rim is sharp-edged, and the inner sides slope directly downward with only some minor terraces along the east wall. The interior floor is somewhat irregular, particularly in the southern half. There is a small central peak at the midpoint of the floor. The name Chant was officially adopted by the International Astronomical Union in 1970 and named for Clarence Chant. This crater lies to the northwest of the Mendel-Rydberg Basin, a 630 km wide impact basin of Nectarian The Nectarian Period of the lunar geologic timescale runs from 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drude (crater)
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. This is a circular crater with a relatively sharp edge, sloping inner walls and a fairly level interior. It has not been significantly eroded, and is generally unremarkable. The nearest craters of note are Graff to the south-southeast and Focas to the north-northwest. The surrounding area is of note for the tumultuous terrain created by the ejecta from Mare Imbrium. The satellite crater formerly known as Drude S was renamed Heyrovský by the IAU. This crater lies north of the Mendel-Rydberg Basin The Mendel-Ryberg Basin is a Nectarian impact basin on the southwester ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vallis Baade
Vallis Baade is a 203 km long sinuous valleyhttp://stuff.mit.edu/afs/athena/project/xephem/lib/auxil/moon_db on the Moon running south-southeast from the crater Baade and centered at (south of the Montes Cordillera). It has the same namesake as the crater, the German astronomer Walter Baade. This is one of several valleys that radiate away from the southeast edge of the Mare Orientale Mare Orientale (Latin ''orientāle'', the "eastern sea") is a lunar mare. It is located on the western border of the near side and far side of the Moon, and is difficult to see from an Earthbound perspective. Images from spacecraft have reveale ... circular impact basin, the other two being Vallis Inghirami and Vallis Bouvard. References Baade {{Moon-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
