St. John (crater)
Encyclopedia
St. John is an eroded lunar
impact crater
on the Moon
's far side. This crater is situated to the northeast of the huge walled plain Mendeleev
, and southwest of the crater Kohlschütter
. To the east of St. John is the small crater Mills
.
This is a heavily worn and eroded crater formation that is now little more than an uneven depression in the surface. It is scarcely distinguishable from the surrounding terrain, except from the shadows cast by the outer rim. The interior floor is uneven and marked by a chain of three small craterlets near 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...
on 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...
's far side. This crater is situated to the northeast of the huge walled plain Mendeleev
Mendeleev (crater)
Mendeleev is a large lunar impact crater that is located on the far side of the Moon, as seen from the Earth. The southern rim of this walled plain just crosses the lunar equator. Intruding into the eastern rim of Mendeleev is the crater Schuster...
, and southwest of the crater Kohlschütter
Kohlschütter (crater)
Kohlschütter is a lunar crater that cannot be viewed directly from the Earth as it lies on the Moon's far side. It is located a couple of hundred kilometers to the southeast of the Mare Moscoviense, and due south of the smaller crater Nagaoka...
. To the east of St. John is the small crater Mills
Mills (crater)
Mills is a small crater that lies on the far side of the Moon. It is located to the northeast of Henderson and to the south of Kohlschütter.This is an undistinguished impact crater that is roughly circular in form, with a slight outward bulge to the northwest. This bulge may be due to the merger of...
.
This is a heavily worn and eroded crater formation that is now little more than an uneven depression in the surface. It is scarcely distinguishable from the surrounding terrain, except from the shadows cast by the outer rim. The interior floor is uneven and marked by a chain of three small craterlets near 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 St. John.| St. John | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 12.4° N | 150.5° E | 16 km |
| M | 7.5° N | 150.1° E | 16 km |
| W | 12.6° N | 147.0° E | 18 km |
| X | 13.9° N | 147.4° E | 30 km |
| Y | 13.8° N | 149.0° E | 21 km |