Mimas (the moon)

See also: Mimas

|----- ! bgcolor=" black" colspan=" 2" align=" center" |
Mimas photographed by Travelling 2 (NASA) |----- ! bgcolor=" #6295da" colspan=" 2" | Discovered |----- | Discovered by || William Herschel |----- | Discovered it || September 17th 1789 |----- ! bgcolor=" #6295da" colspan=" 2" | Characteristic of the Orbit |----- | Equatorial radius || 185.600 km |----- | orbital Eccentricity || 0,0206 |----- | Period of revolution || 0,942 D |----- | Slope || 1,566° |----- | Natural satellite of || Saturn |----- ! bgcolor=" #a0ffa0" colspan=" 2" | Characteristic physics |----- | Diameter with the equator || 418 × 392 × 382 km |----- | Mass || 3,84×10¹⁹ kg |----- | Density average || 1,17×10³ kg/m³ |----- | Gravity of surface || 0,064 m/s² |----- | Period of rotation || synchronous |----- | Albedo || 0,6 |----- | Temperature of surface || ? K |---- ! bgcolor=" #6295da" colspan=" 2" | Characteristic of the atmosphere |----- | Atmospheric pressure | no atmosphere |}

Mimas (S I Mimas) is a Natural satellite of Saturn, discovered in 1789 by William Herschel. It draws its name from Mimas, a Géant of the Greek Mythologie.

The weak density of Mimas (1,17) leaves think that it is mainly made up of Glace of Eau with a small proportion of rocks.

The Herschel crater

The first thing which one notices on Mimas is enormous the crater of impact of 130 km Diamètre which bears the name of the discoverer of Mimas, Herschel. It roughly recovers a third of the diameter of the moon; its sides are approximately 5 km top; one meets there some 10 depth km pits and a central peak which rises of 6 km above the floor of the crater. These characteristics make of it a quasi-perfect example of crater of impact. As one can see it on the photographs of Mimas, the resemblance to the Black Star of the film the Star Wars is enough striking. An equivalent crater on Ground would not have less than 4000 km in diameter, that is to say larger than the Canada or the whole Europe.

The shock which produced this crater missed little completely destroying Mimas: the moon is fractured by it to the face opposed to the point of impact, probably because of the Shock wave which had to cross the body completely.

In addition, the surface of Mimas is almost completely saturated with craters of smaller dimensions. But the distribution in is very heterogeneous: one finds a little everywhere craters of more than 40 km in diameter, except in the area of the south pole where none exceeds the 20 km. The astronomers suppose there that a phenomenon still to be described had to erase the more important craters.

Toponymy

Put aside the giant crater which bears the name of the discoverer of Mimas, the nomenclature of this small body takes as a starting point the Breton cycle and Anglo-Norman of the Chevaliers of the roundtable.
One finds there as follows: Morgane, Bors, Mordred, Bedivere, Merlin, Uther, Ygraine, Gawain, Galahad, Kay, Launcelot, Gwynevere, Tristan and Iseult…

See too

External bond

http://www.lasam.ca/billavf/nineplanets/mimas.html
Astrofiles: Mimas

Simple: Mimas (moon) Zh-classical: 土衛一

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