What is "setebos"

Setebos is one of the outermost retrograde irregular satellites of Uranus. It was discovered on 18 July 1999 by John J. Kavelaars et al. and provisionally designated S/1999 U 1.

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 to the same dynamic cluster as Sycorax and Prospero, suggesting common origin. However, this suggestion does not appear to be supported by the observed colours. The satellite appears neutral (grey) in visible light ( colour indices B-V=0.77, R-V=0.35), similar to Prospero but different from Sycorax (which is light red).

Ironically, a crater on Umbriel is also named after Setebos, but with the spelling Setibos.

Setebos may refer to:

• Setebos, the deity purportedly worshipped by the witch Sycorax in William Shakespeare's The Tempest (Sycorax does not appear in the play). Robert Browning's poem Caliban upon Setebos describes the musings of Sycorax's son, Caliban, on the god.
• Setebos (moon), a moon of the planet Uranus, named for the fictional deity in William Shakespeare's The Tempest
• Setebos, an impact crater on Umbriel, a moon of the planet Uranus, named for the fictional deity in William Shakespeare's The Tempest
• Setebos, a key character / bogeyman featured in Dan Simmons' novels Ilium and Olympos