.gif)
Walther (crater)
Encyclopedia
Walther is an ancient lunar
impact crater
located in the southern highland region of the Moon
. It is joined along the western rim to the crater Deslandres
. To the northeast is Aliacensis
, and joined to the southeast rim is the irregular Nonius
.
It should not be confused with Walter, a tiny crater near Diophantus
.
The rim of Walther is complex, heavily eroded and incised by lesser impacts. The wall retains a generally circular form, but many of its features have been worn away and there is a slight protruding bulge in the western rim. The floor has been resurfaced after the original impact, leaving the southwestern half relatively smooth. In the northwest quadrant is an offset central peak that has been worn and impacted by several small craters.
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...
impact 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...
located in the southern highland region 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...
. It is joined along the western rim to the crater Deslandres
Deslandres (crater)
Deslandres is the heavily worn and distorted remains of a lunar impact crater. It is located to the southeast of the Mare Nubium, in the rugged southern highlands of the Moon. In dimension it is the second-largest crater formation on the visible Moon, being beaten only by the 303-kilometer-diameter...
. To the northeast is Aliacensis
Aliacensis (crater)
Aliacensis is a lunar impact crater that is located in the rugged southern highlands of the Moon. The crater Werner is located just to the north-northwest, and a narrow, rugged valley lies between the two comparably sized formations. To the southwest is Walther, and Apianus is to the northeast. The...
, and joined to the southeast rim is the irregular Nonius
Nonius (crater)
Nonius is a lunar impact crater. It is located in the rugged southern highlands on the Moon's near side. The northwestern side and about half the interior floor are overlain by the rim and outer rampart of the walled plain Walther...
.
It should not be confused with Walter, a tiny crater near Diophantus
Diophantus (crater)
Diophantus is a lunar impact crater that lies in the southwestern part of the Mare Imbrium. It forms a pair with the larger crater Delisle to the north. Diophantus has a wide inner wall and a low central rise. To the north of Diophantus is the sinuous rille designated Rima Diophantus, named after...
.
The rim of Walther is complex, heavily eroded and incised by lesser impacts. The wall retains a generally circular form, but many of its features have been worn away and there is a slight protruding bulge in the western rim. The floor has been resurfaced after the original impact, leaving the southwestern half relatively smooth. In the northwest quadrant is an offset central peak that has been worn and impacted by several small craters.
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 Walther.| Walther | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 32.4° S | 0.7° E | 12 km |
| B | 30.5° S | 1.4° W | 9 km |
| C | 31.2° S | 0.8° W | 14 km |
| D | 32.0° S | 2.8° E | 18 km |
| E | 33.3° S | 1.2° W | 13 km |
| F | 33.1° S | 2.1° E | 6 km |
| G | 32.5° S | 3.9° W | 8 km |
| J | 34.4° S | 1.5° W | 7 km |
| K | 34.1° S | 1.4° W | 7 km |
| L | 31.9° S | 0.9° W | 5 km |
| M | 34.0° S | 0.3° W | 5 km |
| N | 33.7° S | 0.2° W | 6 km |
| O | 35.6° S | 0.1° W | 6 km |
| P | 35.4° S | 0.2° E | 9 km |
| Q | 33.5° S | 0.3° E | 4 km |
| R | 35.8° S | 0.4° E | 8 km |
| S | 36.4° S | 0.6° E | 12 km |
| T | 33.4° S | 1.8° E | 8 km |
| U | 33.4° S | 2.7° E | 4 km |
| W | 32.8° S | 2.5° W | 36 km |
| X | 32.1° S | 1.9° W | 10 km |