- Additional Information
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Additional Information
Short Description Sycorax is the largest retrograde irregular satellite of Uranus. Sycorax was discovered on 6 September 1997 by Brett J. Gladman, Philip D. Nicholson, Joseph A. Burns, and John J. Kavelaars using the 200-inch Hale telescope, together with Caliban, and given the temporary designation S/1997 U 2. Sycorax follows a distant orbit, more than 20 times further from Uranus than the furthest regular moon, Oberon. Its orbit is retrograde, moderately inclined and eccentric. It is hypothesized that Sycorax is a captured object; it did not form in the accretion disk which existed around Uranus just after its formation. Sycorax (moon) - Wikipedia, the free encyclopedia Discovered by Philip D. Nicholson, Brett J. Gladman, Joseph A. Burns, John J. Kavelaars using the Hale telescope Discovery date September 6, 1997 Type Moon AddInfo Uranus XVII Satellite of Uranus Orbit Retrograde Rotation Direct Apoapsis 08 18 393 380 km Periapsis 07 5 957 740 km Semi-major axis 08 12 175 560 km Distance from Sun 02 19.218 4 au /23 Eccentricity 0.522 4 Orbital period 1 288.28 days Orbital speed 0.69 km/s Inclination to the ecliptic 159° Diameter/Size 03 150 km Mass 1018×2.5 kg Density 01 1.3 g/cm3 Surface gravity 0.040 m/s2 Rotation period 3.6 hour Albedo geometric 0.049 Temperature mean 02 65 K Apparent magnitude 20.8 Absolute magnitude 7.83 - Comments
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