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Timocharis (crater)
Encyclopedia
Timocharis is a prominent lunar
impact crater
located on the Mare Imbrium
. The closest crater of comparable dimensions is Lambert
to the west. The smaller craters Feuillée
and Beer
lie to the east of Timocharis.
The rim of Timocharis has a somewhat polygon
al outline, with an outer rampart that extends over 20 kilometers in all directions. The interior wall is slumped and sharply terraced. The center of the floor is occupied by a craterlet that lies on a slight rise. This impact has almost completely removed the original central peak. The crater may have a minor ray system
that extends for over 130 km (81 mi). The lack of prominent rays puts the age of this crater at about a billion years or more.
To the north of Timocharis is a tiny crater chain named the Catena Timocharis.
The following craters have been renamed by the IAU
.
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 on the Mare Imbrium
Mare Imbrium
Mare Imbrium, Latin for "Sea of Showers" or "Sea of Rains", is a vast lunar mare filling a basin on Earth's Moon and one of the larger craters in the Solar System. Mare Imbrium was created when lava flooded the giant crater formed when a very large object hit the Moon long ago...
. The closest crater of comparable dimensions is Lambert
Lambert (lunar crater)
Lambert is a lunar impact crater on the southern half of the Mare Imbrium basin. It lies to the east and somewhat south of the slightly larger crater Timocharis. To the south is the smaller Pytheas, and some distance to the west-southwest is Euler....
to the west. The smaller craters Feuillée
Feuillée (crater)
Feuillée is a small lunar impact crater in the eastern part of the Mare Imbrium. It lies less than a half crater diameter to the northwest of Beer, and the two formations form a nearly matched pair. To the west is the small but prominent crater Timocharis....
and Beer
Beer (lunar crater)
Beer is a relatively small lunar impact crater located on the Mare Imbrium, to the east of the crater Timocharis. Just to the northwest is the matching twin Feuillée....
lie to the east of Timocharis.
The rim of Timocharis has a somewhat polygon
Polygon
In geometry a polygon is a flat shape consisting of straight lines that are joined to form a closed chain orcircuit.A polygon is traditionally a plane figure that is bounded by a closed path, composed of a finite sequence of straight line segments...
al outline, with an outer rampart that extends over 20 kilometers in all directions. The interior wall is slumped and sharply terraced. The center of the floor is occupied by a craterlet that lies on a slight rise. This impact has almost completely removed the original central peak. The crater may have a minor 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...
that extends for over 130 km (81 mi). The lack of prominent rays puts the age of this crater at about a billion years or more.
To the north of Timocharis is a tiny crater chain named the Catena Timocharis.
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 Timocharis.| Timocharis | Latitude | Longitude | Diameter |
|---|---|---|---|
| B | 27.9° N | 12.1° W | 5 km |
| C | 24.8° N | 14.2° W | 4 km |
| D | 23.8° N | 15.1° W | 3 km |
| E | 24.6° N | 17.1° W | 4 km |
| H | 23.6° N | 16.6° W | 2 km |
The following craters have been renamed by the IAU
International Astronomical Union
The International Astronomical Union IAU is a collection of professional astronomers, at the Ph.D. level and beyond, active in professional research and education in astronomy...
.
- Timocharis A — See Heinrich (crater)Heinrich (crater)Heinrich is a small lunar impact crater on the Mare Imbrium, a lunar mare in the northwest quadrant of the Moon's near side. It is a circular, bowl-shaped formation very similar to many other craters of comparable size on the Moon....
. - Timocharis F — See Landsteiner (crater)Landsteiner (crater)Landsteiner is a tiny, bowl-shaped lunar impact crater located in the central Mare Imbrium. It is a circular, cup-shaped feature with no appreciable erosion. Nearby to the south is a low wrinkle ridge named the Dorsum Grabau. Farther south is the prominent crater Timocharis.This feature was...
. - Timocharis K — See Pupin (crater)Pupin (crater)Pupin is a tiny lunar impact crater located in the eastern part of the Mare Imbrium. It lies to the southeast of the crater Timocharis, and was identified as Timocharis K prior to being renamed by the IAU...
.
External links
- LTO-40B3 Kovalevskij — L&PI topographic mapTopographic mapA topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines in modern mapping, but historically using a variety of methods. Traditional definitions require a topographic map to show both natural and man-made features...
of crater and vicinity.