Hiten (spacecraft)
The Hiten spacecraft (ひてん, ), given the English name Celestial Maiden and known before launch as MUSES-A ( Mu Space Engineering Spacecraft A), part of the MUSES Program, was built by the Institute of Space and Astronautical Science of Japan and launched on January 24, 1990. It was Japan's first lunar probe, the first robotic lunar probe since the Soviet Union's Luna 24 in 1976, and the first lunar probe launched by a country other than the Soviet Union or the United States. The spacecraft was named after flying heavenly beings in Buddhism. Hiten was to be placed into a highly elliptical Earth orbit with an apogee of 476,000 km, which would swing past the Moon. However, the injection took place with a delta-v deficit of 50 m/s, resulting in an apogee of only 290,000 km. The deficiency was corrected and the probe continued on its mission. On the first lunar swing-by, Hiten released a small orbiter, Hagoromo (はごろも, named after the feather mantle of ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Hiten
Hiten may refer to: * Hiten (name), Indian given name * Hiten (spacecraft), Japanese lunar probe *Tennin , which may include , , and the specifically female version, the , are a divine kind of spiritual beings found in Japanese Buddhism, the equivalent of Angels. They were seemingly imported from Chinese Buddhism,

Lunar Orbit
In astronomy, lunar orbit (also known as a selenocentric orbit) is the orbit of an object around the Moon. As used in the space program, this refers not to the orbit of the Moon about the Earth, but to orbits by spacecraft around the Moon. The altitude at apoapsis (point farthest from the center of attraction) for a lunar orbit is known as apolune, apocynthion, or aposelene, while the periapsis (point closest to the center of attraction) is known as perilune, pericynthion, or periselene, from names or epithets of the moon goddess. Lunar orbit insertion (LOI) is the adjustment to achieve lunar orbit, as undertaken by Apollo spacecraft for example. Low lunar orbit (LLO) are orbits below altitude. They have a period of about 2 hours. They are of particular interest in exploration of the Moon, but suffer from gravitational perturbation effects that make most unstable, and leave only a few orbital inclinations possible for indefinite '' frozen orbits'', useful for long-term stays i ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Furnerius (crater)
Furnerius is a large Lunar craters, lunar impact crater located in the southeast part of the Moon, in the area close to the southeastern limb of the nearside or visible Moon. Because of its location, the crater appears oval in shape due to foreshortening but is actually nearly circular. Notable nearby craters include Stevinus (crater), Stevinus to the northwest and Fraunhofer (crater), Fraunhofer to the south-southwest. Farther to the northwest is the crater Snellius (crater), Snellius and the Vallis Snellius crater valley. The rim of Furnerius is worn and battered, with multiple impacts along its length and notches along the base. Much of the wall now rises only slightly above the surrounding terrain, with the lowest sections to the north and south. However the northern wall rises to a maximum elevation of 3.5 km. The interior floor is marked by fourteen notable craters, the most notable being Furnerius B in the northern half which has a central rise. Dark patches on the fl ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Stevinus (crater)
Stevinus is a lunar impact crater located in the southeast part of the Moon. To the southeast is the large crater Furnerius. Just to the northeast is Snellius and the Vallis Snellius crater valley. To the west-northwest lies Reichenbach. To the west-northwest of Stevinus is the tiny crater Stevinus A, a feature that possesses a small ray system and a displays a high albedo. Stevinus has a high inner wall and a central peak at the midpoint of the interior floor. The inner walls are slumped, so that the side slopes down sharply, then more gradually. There are several small ridges on the floor, in addition to the peak. Due to its ray system, Stevinus is mapped as part of the Copernican System.The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348. Plate 11: Copernican Systemonline It is named for Simon Stevin Simon Stevin (; 1548–1620), sometimes called Stevinus, was a Flemish mathem ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Kordylewski Cloud
Kordylewski clouds are large concentrations of dust that exist at the and Lagrangian points of the Earth–Moon system. They were first reported by Polish astronomer Kazimierz Kordylewski in the 1960s, and confirmed to exist in October 2018. Discovery and observation Kordylewski began looking for a photometrically confirmable concentration of dust at the libration (Lagrangian) points in 1951. After a change in method suggested by Josef Witkowski, the clouds were first seen by Kordylewski in 1956. Between 6 March and 6 April 1961, he succeeded in photographing two bright patches near the Lagrange point. During the observation time, the patches hardly appeared to move relative to . The observations were taken from the mountain Kasprowy Wierch. In 1967, J. Wesley Simpson made observations of the clouds using the Kuiper Airborne Observatory. In October 2018, the existence of the Kordylewski clouds was reported to have been confirmed, even though, earlier, in 1992, the Japanes ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]  

Lagrangian Point
In celestial mechanics, the Lagrange points (; also Lagrangian points or libration points) are points of equilibrium for small-mass objects under the influence of two massive orbiting bodies. Mathematically, this involves the solution of the restricted three-body problem in which two bodies are far more massive than the third. Normally, the two massive bodies exert an unbalanced gravitational force at a point, altering the orbit of whatever is at that point. At the Lagrange points, the gravitational forces of the two large bodies and the centrifugal force balance each other. This can make Lagrange points an excellent location for satellites, as few orbit corrections are needed to maintain the desired orbit. Small objects placed in orbit at Lagrange points are in equilibrium in at least two directions relative to the center of mass of the large bodies. For any combination of two orbital bodies there are five Lagrange points, L1 to L5, all in the orbital plane of the two lar ...
[...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]