Setebos (moon)

+ Setebos Discovery Discovered by John J. Kavelaars,Brett J. Gladman,Matthew J. Holman,Jean-Marc Petit,and Hans Scholl Discovered on July 18, 1999 Orbital characteristics Mean radius 17,501,000 km Orbital eccentricity 0.5843 Orbital period 2234.77 d Inclination 158° (to the ecliptic)Scott S. Sheppard, David C. Jewitt, and Jan Kleyna
An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness, The Astronomical Journal, 129 (2005), pages 518–525 . Preprint Is a moon of Uranus Physical characteristics Mean diameter ~24 km (estimate) Surface area ~2,000 km² (estimate) Volume ~7,000 km³ (estimate) Mass ~2.1 kg (estimate) Mean density ~1.5 g/cm³ (estimate) Surface gravity ~0.0063 m/s2 (estimate) Escape velocity ~0.014 km/s (estimate) Rotation period ? Axial tilt ?° Albedo 0.04 (assumed) Surface temp. min  mean  max  ~64 K (estimate)  Atmospheric pressure 0 kPa
Setebos is one of the farthest retrograde non-spherical moons of Uranus. It was found on 1999-07-18 by John J. Kavelaars et al. and designated S/1999 U 1.B. Gladman, JJ Kavelaars, Matthew J. Holman, J-M. Petit, H. Scholl, P. Nicholson, J. A. Burnse 
The Discovery of Uranus XIX, XX, and XXI, Icarus, 147 (2000), pp. 320–324

Confirmed as Uranus XIX it is named after the god worshipped by Caliban and Sycorax in William Shakespeare's play The Tempest.

The orbital parameters suggest that it may belong, together with Sycorax and Prospero to the same dynamic cluster, suggesting common origin.Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare
Photometric survey of the irregular satellites,Icarus, 166,(2003), pp. 33-45. Preprint However, this suggestion does not appear to be supported by the observed colours. The moon appears grey in the visible light,Tommy Grav, Matthew J. Holman, and Wesley C. Fraser
Photometry of Irregular Satellites of Uranus and Neptune,The Astrophysical Journal, 613, (2004), pp. L77–L80. Preprint similar to Prospero but different from Sycorax (which is light red).

Related pages
 List of Uranus' moons

 References 

 Ephemeris (IUA)


 Other websites 
 Setebos Profile  by NASA's Solar System Exploration
 David Jewiit pages
 Scott Sheppard pages

Category:Uranus' moons