Coordinates | 6°06′S93°30′E / 6.1°S 93.5°E Coordinates: 6°06′S93°30′E / 6.1°S 93.5°E |
---|---|
Diameter | 132 km |
Depth | Unknown |
Colongitude | 268° at sunrise |
Eponym | Kiyotsugu Hirayama [1] Shin Hirayama |
Hirayama is a large lunar impact crater that is located on the far side of the Moon, just beyond the eastern limb. This region of the surface is sometimes brought into view from Earth during periods of favourable libration. However it is best viewed from orbit. This crater is located along the southeastern edge of the Mare Smythii, to the northeast of the crater Brunner. To the northeast of Hirayama is Wyld. On the west rim of Hirayama is the small, bright-rayed crater Bandfield.
This is a worn and eroded crater with multiple impacts overlapping the outer rim and the interior floor. Hirayama K has broken across the rim to the southeast and Hirayama C crosses the northeastern rim. Along the southwestern outer edge is Hirayama Q. The small Hirayama T is located along the western inner wall, and attached to its eastern edge is Hirayama S. The crater Hirayama Y is adjacent to the northern inner walls of Hirayama and covers a significant part of the northern interior floor. Several smaller craters lie within the floor, including Hirayama N in the south. The floor otherwise forms a relatively level surface within the inner wall.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Hirayama.
Hirayama | Latitude | Longitude | Diameter |
---|---|---|---|
C | 4.2° S | 95.4° E | 23 km |
F | 5.8° S | 97.2° E | 35 km |
G | 6.4° S | 96.8° E | 18 km |
K | 8.3° S | 94.9° E | 39 km |
L | 9.4° S | 94.4° E | 24 km |
M | 9.2° S | 93.5° E | 29 km |
N | 7.2° S | 93.6° E | 17 km |
Q | 8.0° S | 91.3° E | 40 km |
S | 6.5° S | 92.3° E | 29 km |
T | 6.4° S | 91.5° E | 18 km |
Y | 4.5° S | 93.2° E | 50 km |
The names Tolstoy, Montesquieu, Longfellow, and Balzac were proposed for satellite craters Y, S, Q, and K, respectively, but were not approved by the IAU. The names Tolstoj and Balzac were used for craters on Mercury.
Doppler is a lunar impact crater named for Christian Doppler that is located at the southern edge of the walled plain Korolev, on the far side of the Moon. To the east are the craters Das and Galois. Farther to the southwest of Doppler is Mohorovičić.
Compton is a prominent lunar impact crater that is located in the northern hemisphere on the far side of the Moon. It lies to the east of the Mare Humboldtianum, and southwest of the walled plain Schwarzschild. To the southeast of Compton is the heavily eroded crater Swann.
Bowditch is a lunar impact crater that lies on the far side of the Moon, just beyond the eastern limb. It is located on a region of the lunar surface that is brought into view due to libration, but at such times the area is viewed from the edge and so not much detail can be observed. It lies just to the north of the small Lacus Solitudinis lunar mare, between the craters Titius to the southwest and Perel'man to the east-northeast.
Brunner is a lunar impact crater that is located along the eastern limb of the Moon, to the southeast of the Mare Smythii. At this location the crater is viewed from the edge, and so it is not possible to see much detail from the Earth. The visibility of this formation is also affected by libration. The crater lies to the southwest of the walled plain Hirayama, and to the east of the elongated crater Houtermans.
Chebyshev is a large lunar impact crater that lies in the southern hemisphere on the far side of the Moon. The somewhat smaller crater Langmuir is intruding into the east-southeastern rim of Chebyshev, forming a chain of large craters with Brouwer on Langmuir's eastern rim.
Cori is a lunar impact crater that is located in the southern hemisphere on the far side of the Moon. It lies less than one crater diameter to the north of the crater Baldet. To the northeast is the crater Grissom. It is named after Gerty Cori, the first American woman to win the Nobel Prize and the first woman to win the prize in the category Nobel Prize in Physiology or Medicine.
Cajori is a lunar impact crater that is located in the southern hemisphere on the far side of the Moon. It lies to the southwest of the walled plain Von Kármán, and to the east-southeast of the crater Chrétien.
Carnot is a large crater in the northern part of the Moon's far side. It intrudes into the southern rim of the huge walled plain Birkhoff. To the west-southwest of Carnot is the crater Paraskevopoulos.
Chapman is a lunar impact crater that lies just beyond the northwest rim of the Moon, on the far side as seen from the Earth. It lies to the northeast of the crater Rynin, and southward of the large walled plain Poczobutt.
Coulomb is a lunar impact crater that lies behind the northwestern limb, on the far side of the Moon. It is located to the west-southwest of the large crater Poczobutt, and northeast of Sarton.
Fourier is a lunar impact crater that is located in the southwestern part of the Moon's near side, just to the southeast of the crater Vieta. To the northeast is the Mare Humorum. The rim of this crater is roughly circular, but appears oval when viewed from the Earth due to foreshortening.
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.
Hédervári is a lunar impact crater that is located in the southern part of the Moon, only a few crater diameters from the south lunar pole. It is attached to the northern rim of the larger crater Amundsen, and lies south of Hale. Due to its location, this crater is viewed nearly from the edge from Earth, which hinders the amount of detail that can be observed. It is also illuminated obliquely by the Sun, and the interior is often cloaked in shadows.
Donner is a lunar impact crater on the far side of the Moon. It is located just to the northeast of the Mare Australe, behind the southeastern limb of the Moon. During favorable librations this part of the lunar surface can be brought into view of the Earth, but the site is viewed from the edge and so not much detail can be seen.
Edison is a lunar impact crater on the far side of the Moon. It is located just behind the north-northeastern limb of the Moon, a region that is sometimes brought into sight from Earth during favorable librations. However even at such times not much detail can be discerned, and the crater is better observed by orbiting spacecraft.
Fersman is a large lunar impact crater on the Moon's far side. It lies to the east of the crater Poynting, and west-northwest of Weyl. To the south is the huge walled plain Hertzsprung.
Frost is a lunar impact crater that is attached to the southern rim of the walled plain Landau, and lies on the far side of the Moon. Just to the east is Petropavlovskiy, and to the northeast along the edge of Landau is Razumov. The crater Douglass is located less than a crater diameter to the west-southwest.
Ganskiy is a lunar impact crater that is located on the far side of the Moon. It lies to the southeast of the walled plain Hirayama.
Kleymenov is a crater on the far side of the Moon. It is located near the east-northeastern outer wall of the huge walled plain Apollo, and to the west-northwest of the large crater Chebyshev. To the north is Mariotte.
Lomonosov is a lunar impact crater that is located just behind the western limb of the Moon. It is almost attached to the east-northeastern outer rim of the larger crater Joliot, and overlies the southern rim of Maxwell. Attached to the southern rim of Lomonosov is the smaller Edison.