Barbier (crater)
Encyclopedia
Barbier is a lunar
impact crater
that is located on the southern hemisphere
on the far side of the Moon
. It forms a matched pair with Cyrano
to the north-northwest, and it lies to the southeast of the huge walled plain Gagarin
. Southwest of Barbier is the crater Sierpinski
, and to the southeast is the Mare Ingenii
.
The outer rim of Barbier has been eroded somewhat by subsequent impacts, particularly at the north end where the wall has been degraded by several small craterlets. A small crater lies across the eastern rim, and the southern rim is wider and irregular in shape. A small crater lies near where a central peak would be located, offset slightly to the east of the mid-point.
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...
that is located on the southern hemisphere
Sphere
A sphere is a perfectly round geometrical object in three-dimensional space, such as the shape of a round ball. Like a circle in two dimensions, a perfect sphere is completely symmetrical around its center, with all points on the surface lying the same distance r from the center point...
on the far side 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 forms a matched pair with Cyrano
Cyrano (crater)
Cyrano is a lunar impact crater that lies on the far side of the Moon. It lies due east of the huge walled plain Gagarin, and to the north of the somewhat smaller crater Barbier....
to the north-northwest, and it lies to the southeast of the huge walled plain Gagarin
Gagarin (crater)
Gagarin is a large lunar impact crater that is located in the southern hemisphere on the far side of the Moon. To the southwest is the crater Pavlov and to the northeast lies Keeler. Closer to the rim are the craters Levi-Civita to the southwest, and Beijerinck to the north-northeast. Isaev lies...
. Southwest of Barbier is the crater Sierpinski
Sierpinski (crater)
Sierpinski is a lunar impact crater on the far side of the Moon. It lies to the southeast of the huge walled plain Gagarin, and to the northwest of the crater O'Day and the Mare Ingenii....
, and to the southeast is the Mare Ingenii
Mare Ingenii
Mare Ingenii is one of the few lunar mare features on the far side of the Moon. The mare sits in the Ingenii basin. This basin material is of the Pre-Nectarian epoch. The mare material located in Ingenii and the surrounding craters is of the Upper Imbrian epoch...
.
The outer rim of Barbier has been eroded somewhat by subsequent impacts, particularly at the north end where the wall has been degraded by several small craterlets. A small crater lies across the eastern rim, and the southern rim is wider and irregular in shape. A small crater lies near where a central peak would be located, offset slightly to the east of the mid-point.
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 Barbier.| Barbier | Latitude | Longitude | Diameter |
|---|---|---|---|
| F | 23.8° S | 158.1° E | 14 km |
| D | 23.0° S | 160.2° E | 24 km |
| G | 24.4° S | 160.1° E | 17 km |
| H | 25.3° S | 160.5° E | 17 km |
| J | 26.0° S | 160.1° E | 43 km |
| K | 26.5° S | 159.4° E | 7 km |
| U | 22.8° S | 155.1° E | 38 km |
| V | 22.3° S | 154.6° E | 29 km |