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Sinope
Sinope

Planet of Origin

Jupiter

Discoverer

Seth Barnes Nicholson

Date of Discovery

July 21, 1914

Place of Discovery

Lick Observatory

Surface Color

Red (black and grey on different geographical features)

Alternate Name(s)

Jupiter IX

Sinope, also known as Jupiter IX, is a retrograde, or orbiting a planet backward, satellite belonging to the outer planet of Jupiter. This satellite was founded by Seth Barnes Nicholson at the Lick Observatory on July 21, 1914. Once known as the outermost satellite of the planet Jupiter, another satellite, S/2003 J2 was given this title, also surpassing the satellite of Megaclite.

FormationEdit

With its color differing from its neighboring satellite, Pasiphae, it also has an infrared spectrum differing from Pasiphae as well. The spectrum matches that of a D-type asteroid, which is mostly found in places in the solar region, the Asteroid belt, which neighbors the planet of Jupiter. Pasiphae, however, matches that of a C-type asteroid, which outnumbers the amount of D-type asteroids in the Asteroid belt, meaning Sinope was pulled into Jupiter's gravitational pull from a distance in the Asteroid belt.

Group EffortEdit

Sinope, being only two-thirds the size of Pasiphae, is in a group called the Pasiphae group, a group that contains retrograde satellites that are similar to the size of Pasiphae and have a similar orbit. The largest of the group is Pasiphae. The rest, in order from largest to smallest are Sinope, Callirrhore, Megaclite, Autonoe, Eurydome, and Sponde.

SurfaceEdit

Unlike its neighboring satellite, Pasiphae, Sinope has a reddish surface while Pasiphae has a grey surface. These two different color spectrums prove that Sinope came from a different region in the Asteroid belt than Pasiphae. The surface appears to have no visible craters, but do have visible valleys and hills. These geographical features appear to be darker than the surrounding area, being colors of black and grey.

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