|Discovered by|| Brett J. Gladman,|
Philip D. Nicholson,
Joseph A. Burns,
and John J. Kavelaars
|Discovered in||September 6, 1997|
|Semimajor axis||7,231,000 km|
|Orbital period||579.73 d|
|Inclination|| 120.28° (to Uranus' equator)|
140.878° (to the local Laplace plane)
139.89° (to the ecliptic)
|Is a satellite of||Uranus|
|Mean diameter||~72 km (estimate)|
|Surface area||~16,000 km2 (estimate)|
|Volume||~200,000 km3 (estimate)|
|Mass||~2.5 kg (estimate)|
|Mean density||~1.3 g/cm3 (assumed)|
|Surface gravity||~0.02 m/s2 (estimate)|
|Escape velocity||~0.031 km/s (estimate)|
Caliban was discovered on 1997-09-06 by Brett J. Gladman, Philip D. Nicholson, Joseph A. Burns, and John J. Kavelaars using the 200-inch Hale telescope together with Sycorax and given the temporary designation S/1997 U 1.
The orbital parameters suggest that it may belong, together with Stephano to the same dynamic cluster, suggesting common origin.
Somewhat inconsistent reports put Caliban in light-red category (B-V=0.83 V-R=0.52, B-V=1.23 V-R=0.47) redder than Sycorax but still less red than most Kuiper Belt Objects.
The light curve suggests the rotation period of 2.7h.