Simpelius (crater)
Encyclopedia
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
.
The most distinctive aspect of this crater is the asymmetry of the inner wall, with the side being nearly twice as wide at the southern end as it is to the north. As a result the level interior floor is offset to the north of the crater interior. The rim and inner wall are less sharply defined than those of Schomberger or Moretus, having been softened and smoothed by impacts. The rim is uneven, with peaks to the north, west, east, and south-southeast, and low sections in between. There are also a number of small crater pits along the inner wall and the interior floor.
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 lies in the southern part 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 lies to the north-northwest of the somewhat larger crater Schomberger
Schomberger (crater)
Schomberger is a prominent lunar impact crater that lies in the southern part of the Moon, in the area near the limb. It is located to the southwest of the crater Boguslawsky, and southeast of Simpelius...
, and east-southeast of the prominent Moretus
Moretus (crater)
Moretus is a lunar impact crater located in the heavily cratered highland region near the south pole of the Moon. South of it is the crater Short, while to the north is Cysatus. To the northwest lies Gruemberger, and Curtius is located to the northeast...
.
The most distinctive aspect of this crater is the asymmetry of the inner wall, with the side being nearly twice as wide at the southern end as it is to the north. As a result the level interior floor is offset to the north of the crater interior. The rim and inner wall are less sharply defined than those of Schomberger or Moretus, having been softened and smoothed by impacts. The rim is uneven, with peaks to the north, west, east, and south-southeast, and low sections in between. There are also a number of small crater pits along the inner wall and the interior floor.
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 Simpelius.| Simpelius | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 70.1° S | 16.5° E | 60 km |
| B | 75.2° S | 10.2° E | 50 km |
| C | 72.6° S | 5.9° E | 49 km |
| D | 71.6° S | 8.6° E | 54 km |
| E | 70.1° S | 11.0° E | 45 km |
| F | 68.7° S | 16.8° E | 29 km |
| G | 71.8° S | 23.0° E | 24 km |
| H | 68.0° S | 15.5° E | 29 km |
| J | 76.1° S | 8.4° E | 17 km |
| K | 74.8° S | 15.7° E | 23 km |
| L | 70.4° S | 6.7° E | 16 km |
| M | 70.4° S | 16.4° E | 7 km |
| N | 71.3° S | 24.3° E | 8 km |
| P | 75.5° S | 5.0° E | 8 km |