Sycorax (moon) facts for kids
|Discovered by||Philip D. Nicholson,
Brett J. Gladman,
Joseph A. Burns,
John J. Kavelaars
|Discovery date||September 6, 1997|
|Avg. distance from the center of its orbital path||12,179,000 km|
|How long it takes to complete an orbit||1288.28 d|
|Angle above the reference plane
|159° (to the ecliptic)|
|What it orbits||Uranus|
|Size and other qualities|
|Average radius||12,179,000 km|
|Surface area||~70,000 km² (estimate)|
|Volume||~1,800,000 km³ (estimate)|
|Mass||~5.4×1018 kg (estimate)|
|Average density||~1.5 g/cm³ (estimate)|
|Surface gravity||~0.040 m/s2 (estimate)|
|Escape velocity||~0.087 km/s (estimate)|
|How much light it reflects||0.04 (assumed)|
Sycorax was found on September 6, 1997 by Brett J. Gladman, Philip D. Nicholson, Joseph A. Burns, and John J. Kavelaars. They found it using the 200-inch Hale telescope. They also found Caliban. Sycorax was given the designation S/1997 U 2.
The diagram illustrates the orbital parameters of the retrograde non-spherical moons of Uranus (in polar co-ordinates) with the eccentricity of the orbits represented by the segments extending from the pericentre to the apocentre.
The diameter of Sycorax is estimated at 150 km (assuming albedo of 0.04) making it the biggest non-spherical moon of Uranus, comparable in size with Himalia, the biggest non-spherical moon of Jupiter.
The rotation period could not be estimated well (best fit ~4 h).
Sycorax (moon) Facts for Kids. Kiddle Encyclopedia.