Ventris (crater)
Encyclopedia
Ventris is a lunar
crater
on the far side of the Moon
. It is located between the crater Schliemann
just to the northwest and the large Keeler
which lies slightly farther to the southeast. One crater diameter to the northeast is Vening Meinesz
.
Since it was formed, this crater has been heavily worn and eroded by subsequent impacts. Multiple craters lie across the rim and within the interior. The largest of these is Ventris C covering the northeastern rim. In the northern part of the floor is Ventris A. The southern floor contains Ventris M, a fresh impact crater
with a small ray system
and a relatively high albedo
. The rays from this satellite extend in a skirt that covers most of Ventris. Narrower rays extend much farther to the northwest and southwest.
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...
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 is located between the crater Schliemann
Schliemann (crater)
Schliemann is a lunar impact crater on the far side of the Moon. It is located just to the northwest of the somewhat larger crater Ventris, and to the northeast of the prominent Chaplygin. Farther to the northeast of Schliemann is the large Mandel'shtam....
just to the northwest and the large Keeler
Keeler (lunar crater)
Keeler is a large lunar crater that lies on the Moon's far side. It is connected along the eastern edge to Heaviside, a walled plain of similar dimensions. Keeler, however, is the younger of the two formations, with more clearly delineated features...
which lies slightly farther to the southeast. One crater diameter to the northeast is Vening Meinesz
Vening Meinesz (crater)
Vening Meinesz is a lunar crater on the far side of the Moon. The northern inner wall of this crater lies along the lunar equator. To the north of this formation is the larger crater Mandel'shtam, and slightly farther to the south is the larger Keeler...
.
Since it was formed, this crater has been heavily worn and eroded by subsequent impacts. Multiple craters lie across the rim and within the interior. The largest of these is Ventris C covering the northeastern rim. In the northern part of the floor is Ventris A. The southern floor contains Ventris M, a fresh 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...
with a small ray system
Ray system
A ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking a bit like many thin spokes coming from the hub of a wheel. The rays can extend for lengths up to several times the diameter of their originating crater, and are often accompanied by...
and a relatively high albedo
Albedo
Albedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...
. The rays from this satellite extend in a skirt that covers most of Ventris. Narrower rays extend much farther to the northwest and southwest.
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 Ventris.| Ventris | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 4.4° S | 158.2° E | 26 km |
| B | 2.4° S | 158.2° E | 18 km |
| C | 3.2° S | 158.9° E | 48 km |
| D | 3.4° S | 160.3° E | 21 km |
| M | 6.0° S | 157.9° E | 18 km |
| N | 7.1° S | 157.6° E | 63 km |
| R | 6.3° S | 155.1° E | 13 km |