Coordinates | 14°36′S158°30′E / 14.6°S 158.5°E Coordinates: 14°36′S158°30′E / 14.6°S 158.5°E |
---|---|
Diameter | 34 km |
Depth | Unknown |
Colongitude | 202° at sunrise |
Eponym | Johannes H. W. Geiger |
Geiger is a lunar impact crater on the far side of the Moon. It lies to the southwest of the much larger walled plain Keeler, and slightly farther to the northeast of the huge walled plain Gagarin. To the south is the crater Cyrano.
This is a not-quite symmetrical crater formation with small outward bulges along the north and northeast. The rim to the southeast is less well-formed than elsewhere. The northern inner wall is more extensive than elsewhere, slumping across about one-third the inner floor. The interior is otherwise relatively level and is marked by a few tiny craterlets.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Geiger.
Geiger | Latitude | Longitude | Diameter |
---|---|---|---|
K | 16.0° S | 159.9° E | 11 km |
L | 16.3° S | 159.3° E | 6 km |
R | 15.7° S | 156.5° E | 40 km |
Y | 12.7° S | 158.1° E | 29 km |
Grimaldi is a large basin located near the western limb of the Moon. It lies to the southwest of the Oceanus Procellarum, and southeast of the crater Riccioli. Between Oceanus Procellarum is Damoiseau, and to the north is Lohrmann.
Herodotus is a lunar impact crater located on a low shelf in the midst of the Oceanus Procellarum. To the east is the slightly larger crater Aristarchus. West across the mare is Schiaparelli. Almost due south on the mare surface is a solitary lunar dome designated Herodotus Omega (ω).
Le Verrier is a small lunar impact crater located in the northern part of the Mare Imbrium. It was named after French mathematician and astronomer Urbain Le Verrier. To the west is the slightly larger crater Helicon, and farther to the west-northwest lies the mountain-ringed bay Sinus Iridum.
Rost is a lunar impact crater that is located in the southwestern part of the Moon, to the southeast of the elongated formation Schiller. To the southeast of Rost is the larger crater Scheiner. West-southwest of this formation is the smaller Weigel.
Lovelace is a lunar impact crater that is located on the far side of the Moon, just behind the northern limb. It lies to the south-southwest of the crater Hermite, and just to the north of the slightly smaller Froelich. To the east is Sylvester.
Lacroix is a crater that is located in the southwest part of the Moon, to the northwest of the large walled plain Schickard. The most notable feature of this crater is the smaller crater Lacroix J that overlies the southern rim. The surviving rim of Lacroix is nearly circular, with a slightly worn inner wall. The interior floor is relatively featureless.
Lemaître is a lunar impact crater that is located on the southern hemisphere on the far side of the Moon. It lies to the south of the older crater Minkowski, and north of Crommelin. To the east-southeast lies the crater Eijkman.
van Albada is a lunar impact crater that is attached to the south-southeastern rim of Auzout. It lies southeast of Mare Crisium, and north-northeast of the larger crater Firmicus. Directly to the east is Krogh.
Horrebow is a lunar impact crater that is located along the northern shore of Mare Frigoris, just to the south of the walled plain J. Herschel. To the west of Horrebow is the crater Robinson.
Hecataeus is a large lunar impact crater that lies near the eastern limb of the Moon. It is attached to the northern rim of the walled plain Humboldt. To the northeast is the smaller crater Gibbs. East of Hecataeus is a chain of small craters forming a line radial to Humboldt; these are designated the Catena Humboldt, named after the walled plain.
Moiseev is a lunar impact crater that is located just on the far side of the Moon. It lies to the south-southwest of the slightly larger crater Hertz, and north of Saenger. To the southeast lies the irregular crater Al-Khwarizmi.
Simpelius is an impact crater that lies in the southern part of the Moon. It lies to the north-northwest of the somewhat larger crater Schomberger, and east-southeast of the prominent Moretus.
Hubble is a lunar impact crater that lies very near the east-northeastern limb of the Moon. At this location it is viewed almost from the side from Earth, and the visibility of this feature is affected by libration. It lies to the north of the Mare Marginis and northeast of the crater Cannon. About one crater diameter to the north-northeast is Lyapunov.
Kulik is a lunar impact crater that lies on the northern hemisphere of the Moon's far side. The outer rim of this crater has been heavily impacted, particularly along the northern side which is almost entirely overlain by a pair of smaller craters. The southern inner wall is also marked by a cluster of small impacts, and there are small craters across the western rim and notching the eastern inner wall. The interior floor is nearly featureless, but a small central peak rises near the midpoint.
Nöther is a lunar impact crater on the far side of the Moon. It is located in the far northern latitudes, to the northwest of the walled plain Poczobutt. About two crater diameters to the north-northwest of Nöther lies Niepce.
Pauli is a lunar impact crater that is located on the Moon's far side. It lies about halfway between the lunar equator and southern pole, across the southern rim of the larger walled plain Roche.
Langmuir is an impact crater on the Moon's far side. It is located in a region to the southwest of the Mare Orientale impact basin. Langmuir is bracketed between two larger craters, with Chebyshev to the west-northwest and Brouwer to the east. It partly overlaps the rims of these two craters, making it the youngest of the three. The outer rampart of ejecta from Langmuir partly covers the southeast interior floor of Chebyshev.
Woltjer is an impact crater that is located in the northern latitudes of the Moon's far side. It is just attached to the southern outer rim of the larger crater Montgolfier. To the southwest is Schneller and to the east is Stoletov. It is named after astronomer Jan Woltjer.
Meitner is an impact crater on the far side of the Moon, behind the eastern limb. It lies to the northwest of the crater Kondratyuk, and about a crater diameter to the west of Langemak.
Schjellerup is a lunar impact crater that is located in the far northern latitudes on the Moon's far side. This crater lies to the southwest of the larger Karpinskiy, and to the northeast of Gamow. To the northwest of Schjellerup is the crater Seares and to the south-southeast lies Avogadro.