Sinope is a non- spherical moon of Jupiter. It was found by Seth Barnes Nicholson at Lick Observatory in 1914, and is named after  Sinope of Greek mythology.
Sinope did not get its present name until 1975
 ; before then, it was simply known as  . It was sometimes called " Jupiter IX Hades" between 1955 and 1975. 
Sinope was the farthest known
moon of Jupiter until the discovery of Megaclite in 2000. The farthest moon of Jupiter now known is . S/2003 J 2
Sinope orbits Jupiter on a high eccentricity and high inclination retrograde orbit. The orbital elements are as of January 2000.
They are changing a lot due to  Solar and planetary perturbations. It is often believed to belong to the Pasiphaë group. 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 moons of the group. 
Sinope has an estimated diameter of 38 km (assuming an albedo of 0.04)
The moon is red  unlike Pasiphae which is grey. 
infrared spectrum is similar to D-type asteroids also different from Pasiphae. These dissimilarities of the physical parameters suggest a different origin from the core members of the group. 
↑ 1.0 1.1 1.2 1.3 1.4 Jacobson, R. A. (2000). "The Orbits of the Outer Jovian Satellites". Astronomical Journal 120: pp. 2679-2686. doi: 10.1086/316817 . . http://www.journals.uchicago.edu/AJ/journal/issues/v120n5/200233/200233.web.pdf
↑ Nicholson, S. B. (1914). "Discovery of the Ninth Satellite of Jupiter". Publications of the Astronomical Society of the Pacific 26: pp. 197-198 . . http://adsabs.harvard.edu//full/seri/PASP./0026//0000197.000.html
↑ Nicholson, S. B. (April 1939). (in which he declines to name the recently discovered satellites (pp. 93–94)) "The Satellites of Jupiter". Publications of the Astronomical Society of the Pacific 51 (300): pp. 85–94 . . http://adsabs.harvard.edu//full/seri/PASP./0051//0000093.000.html
↑ IAUC 2846: 1974 October 7 (naming the moon) Satellites of Jupiter
↑ Payne-Gaposchkin, Cecilia; Katherine Haramundanis (1970). Introduction to Astronomy. Englewood Cliffs, N.J.: Prentice-Hall. ISBN 0-134-78107-4.
↑ 6.0 6.1 Sheppard, S. S.; and Jewitt, D. C.; , Nature, Vol. 423 (May 2003), pp. 261-263 An Abundant Population of Small Irregular Satellites Around Jupiter
↑ 7.0 7.1 Grav, T.; Holman, M. J.; Gladman, B. J.; and Aksnes, K.; , Icarus, Vol. 166 (2003), pp. 33-45 Photometric Survey of the Irregular Satellites
↑ Grav, T.; and Holman, M. J. (2004). "Near-Infrared Photometry of the Irregular Satellites of Jupiter and Saturn". The Astrophysical Journal 605: pp. L141–L144 . . http://arxiv.org/abs/astro-ph/0312571