Everything about Sinope Moon totally explained
Sinope (sə-noe'-pee, ; Greek
Σινώπη) is a
retrograde irregular satellite of
Jupiter discovered by
Seth Barnes Nicholson at
Lick Observatory in
1914, and is named after
Sinope of
Greek mythology.
Sinope didn't receive its present name until
1975; before then, it was simply known as . It was sometimes called "
Hades" between 1955 and 1975.
Sinope was the outermost known
moon of
Jupiter until the discovery of
Megaclite in
2000. The most distant moon of Jupiter now known is .
Orbit
Sinope orbits Jupiter on a high eccentricity and high inclination retrograde orbit. The orbital elements are as of January 2000. However, given its mean inclination and different colour, Sinope could be also an independent object, captured independently, unrelated to the collision and break-up at the origin of the group. The diagram illustrates Sinope's orbital elements in relation to other satellites of the group.
Sinope is also known to be in a secular resonance with Jupiter, similar to Pasiphae. However, Sinope can drop out of this resonance and has periods of both resonant and non resonant behaviour in time scales of 10
7 years.
Physical characteristics
Sinope has an estimated diameter of 38 km (assuming an albedo of 0.04) These dissimilarities of the physical parameters suggest a different origin from the core members of the group.
Further Information
Get more info on 'Sinope Moon'.
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