Kästner (crater)
Encyclopedia
Kästner is a lunar
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

 crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...

 that is located near the eastern limb of the Moon
Moon
The Moon is Earth's only known natural satellite,There are a number of near-Earth asteroids including 3753 Cruithne that are co-orbital with Earth: their orbits bring them close to Earth for periods of time but then alter in the long term . These are quasi-satellites and not true moons. For more...

, to the southwest of the Mare Smythii
Mare Smythii
Mare Smythii is a lunar mare located along the equator on the easternmost edge of the lunar near side. The Smythii basin where the mare is located is of the Pre-Nectarian epoch, while the surrounding features are of the Nectarian system...

. Just to the northwest of Kästner is the walled plain Gilbert
Gilbert (lunar crater)
Gilbert is a large lunar crater that lies near the eastern limb of the Moon. Due to its location this feature appears foreshortened when viewed from the Earth, limiting the amount of detail that can be observed...

. To the south is the prominent crater Ansgarius
Ansgarius (crater)
Ansgarius is a lunar impact crater that is located near the eastern limb of the Moon. When viewed from the Earth, the crater has a highly oval shape due to foreshortening, but the rim is actually nearly circular. To the northwest of Ansgarius is the crater La Pérouse, and south is Behaim.The rim of...

, and to the southwest lies La Pérouse
La Pérouse (crater)
La Pérouse is a lunar impact crater that is located near the eastern limb of the Moon. It lies northwest of the larger crater Ansgarius, and to the east of Kapteyn. This crater appears foreshortened due to its location, but the rim is nearly circular when viewed from orbit.The rim of La Pérouse is...

.

This formation belongs to the category termed a walled plain. It has a worn, irregular outer wall that is overlaid by several small craters and there is a small break along the north-northeast. Along the northeastern rim is Kästner B, and to the southwest is the small Kästner E. A shallow, unnamed crater is attached to the southern rim. The interior floor is relatively level and featureless, with only a few small craterlets and minor ridges.

Satellite craters

By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Kästner.
Kästner Latitude Longitude Diameter
A 4.5° S 77.3° E 25 km
B 6.3° S 80.7° E 20 km
C 8.0° S 76.9° E 19 km
E 8.1° S 77.6° E 10 km
G 4.2° S 79.0° E 72 km
R 6.9° S 82.3° E 17 km
S 8.0° S 83.2° E 30 km


The following craters have been renamed by the IAU
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...

.
  • Kästner F — See Black
    Black (crater)
    Black is a small lunar crater that lies just to the southeast of the walled basin Kästner. To the south-southwest is the crater Ansgarius, and to the east is the small Dale. It is located near the eastern limb of the Moon, just to the southwest of the Mare Smythii.Black is circular with a...

    .
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