View source for Setebos (moon)

{{Short description|Moon of Uranus}}
{{Infobox planet
| name = Setebos
| image = Uranus - Setebos image.jpg
| caption = Discovery image of Setebos (encircled)
| mpc_name = Uranus XIX
| pronounced = {{IPAc-en|ˈ|s|ɛ|t|ɛ|b|ʌ|s}},<!--no schwas, and 'o' as in 'son', per Royal Shakespeare Company--><ref>Shakespeare Recording Society (1995) ''The Tempest'' (audio CD)</ref> {{IPAc-en|-|b|ɒ|s}}<ref>Benjamin Smith (1903) ''The Century Dictionary and Cyclopedia''</ref>
| adjectives = Setebosian {{IPAc-en|ˌ|s|ɛ|t|ɛ|ˈ|b|ou|s|i|ə|n}}<ref>Campbell, Pyre, Weaver (1932) ''Poetry and criticism of the romantic movement''</ref>
| discoverer =
  {{plainlist |
*[[John J. Kavelaars]]
*[[Brett J. Gladman]]
*[[Matthew J. Holman]]
*[[Jean-Marc Petit]]
*[[Hans Scholl (astronomer)|Hans Scholl]]
  }}
| discovered = July 18, 1999
| mean_orbit_radius = 17,418,000&nbsp;km{{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}}<ref name="JPL" />
| eccentricity = 0.5914<ref name="JPL" />
| period = 2225.21 d<!-- {{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}} has 2234.8 -->
| inclination = <!-- 140.11° (to Uranus's equator) <br /> 158.16° (to the local [[Laplace plane]]) <br /> --> 158° (to the [[ecliptic]]){{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}}
| satellite_of = [[Uranus]]
| mean_radius = 24&nbsp;km (estimate){{refn|name=Sheppard et al. 2005 radius/albedo}}<br/><50 km<ref name="FarkasTakacs2017"/>
| surface_area = ~7200 km<sup>2</sup> (estimate)
| volume = ~58,000 km<sup>3</sup> (estimate)
| mass = ~7.5{{e|16}} [[kilogram|kg]] (estimate)
| surface_grav = ~0.0063 [[Acceleration|m/s<sup>2</sup>]] (estimate)
| escape_velocity = ~0.0204&nbsp;km/s (estimate)
| density = ~1.3 g/cm<sup>3</sup> (assumed)
| rotation = 4.255 ± 0.017 h<ref name="FarkasTakacs2017"/>
| axial_tilt = ?
| albedo = 0.04 (assumed){{refn|name=Sheppard et al. 2005 radius/albedo}}
| single_temperature = ~65 [[Kelvin|K]] (estimate)
}}

'''Setebos''' {{IPAc-en|ˈ|s|ɛ|t|ɛ|b|ʌ|s}} is one of the outermost [[retrograde motion|retrograde]] [[irregular satellite]]s of [[Uranus]]. It was discovered on 18 July 1999 by [[John J. Kavelaars]] ''et al.'' and provisionally designated '''S/1999 U 1'''.<ref name="Gladman Discovery 2000" />

[[File:Setebos discovery.gif|thumb|left|upright|Animation of discovery images taken in July 1999]]

Confirmed as '''Uranus XIX''', it is named after the god [[Setebos]] worshipped by [[Caliban]] and [[Sycorax]] in [[William Shakespeare]]'s play ''[[The Tempest (play)|The Tempest]]''.

The orbital parameters suggest that it may belong to the same dynamic cluster as [[Sycorax (moon)|Sycorax]] and [[Prospero (moon)|Prospero]], suggesting common origin.<ref name="Grav2003" /> However, this suggestion does not appear to be supported by the observed colours. The satellite appears neutral (grey) in [[visible light]] ([[color index|colour indices]] {{nobr|B−V {{=}} 0.77 ,}} {{nobr|R−V {{=}} 0.35 ),}}{{sfn|Grav|Holman|Fraser|2004|p=}} similar to Prospero but different from Sycorax (which is light red).

A crater on [[Umbriel]] is also named after Setebos, but with the spelling [[Umbriel#Surface features|Setibos]].

==See also==
*[[Moons of Uranus]]
*[[Irregular satellite]]s

==References==
{{reflist|25em|refs=

<ref name="JPL">
{{cite web
| last = Yeomans
| first = Donald K.
| date = 2007-06-28
| title = Planetary Satellite Mean Orbital Parameters
| publisher = JPL/NASA
| url = http://ssd.jpl.nasa.gov/?sat_elem#uranus
| access-date = 2008-01-19
}}
</ref>

<ref name="Gladman Discovery 2000">
[[Brett J. Gladman|Gladman, B. J.]]; [[John J. Kavelaars|Kavelaars, J. J.]]; [[Matthew J. Holman|Holman, M. J.]], [[Jean-Marc Petit|Petit, J.-M.]]; [[Hans Scholl (astronomer)|Scholl, H.]]; [[Phil Nicholson|Nicholson, P. D.]]; and Burns, J. A.; ''The Discovery of Uranus XIX, XX, and XXI'', Icarus, '''147''' (2000), pages 320–324
</ref>

<ref name="Grav2003">
[[Tommy Grav|Grav, Tommy]]; Holman, Matthew J.; Gladman, Brett J.; and [[Kaare Aksnes|Aksnes, Kaare]]; ''Photometric survey of the irregular satellites'', Icarus, '''166''', (2003), pages 33–45. {{arxiv|astro-ph/0301016}}
</ref>

<ref name="Sheppard et al. 2005 radius/albedo">
{{harvnb|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3 ... r<sup>i</sup> (km) ... 24 ... <sup>i</sup> Radius of satellite assuming a geometric albedo of 0.04}}.
</ref>

<ref name="FarkasTakacs2017">{{cite journal
 |title      = Properties of the Irregular Satellite System around Uranus Inferred from K2, Herschel, and Spitzer Observations
 |display-authors = etal
 |first1     = A. |last1 = Farkas-Takács
 |first2     = Cs. |last2 = Kiss
 |first3     = A. |last3 = Pál
 |first4     = L. |last4 = Molnár
 |first5     = Gy. M. |last5 = Szabó
 |first6     = O. |last6 = Hanyecz
 |date       = September 2017
 |journal    = The Astronomical Journal
 |volume     = 154
 |issue      = 3
 |id         = 119
 |pages      = 13
 |doi        = 10.3847/1538-3881/aa8365
 |arxiv      = 1706.06837
 |bibcode    = 2017AJ....154..119F|s2cid = 118869078
 |doi-access = free
}}</ref>

}} <!-- end "refs=" -->

{{refbegin|colwidth=25em|small=yes}}
*{{cite journal
 |last1 = Grav   |first1 = Tommy
 |last2 = Holman |first2 = Matthew J. |author-link2 = Matthew J. Holman
 |last3 = Fraser |first3 = Wesley C.
 |date = 2004-09-20
 |title = Photometry of Irregular Satellites of Uranus and Neptune
 |journal = [[The Astrophysical Journal]]
 |volume = 613 |issue = 1 |pages = L77–L80
 |arxiv = astro-ph/0405605 |bibcode = 2004ApJ...613L..77G
 |s2cid = 15706906 |doi = 10.1086/424997
}}
*{{Cite journal
 |last1 = Sheppard |first1 = S.S.
 |last2 = Jewitt   |first2 = D.
 |last3 = Kleyna   |first3 = J.
 |year = 2005
 |title = An ultradeep survey for irregular satellites of Uranus: Limits to completeness
 |journal = [[The Astronomical Journal]]
 |volume = 129 |issue = 1 |pages = 518–525
 |arxiv = astro-ph/0410059 |bibcode = 2005AJ....129..518S
 |doi = 10.1086/426329 |s2cid = 18688556
}}
{{refend}}

==External links==
*{{cite web |title=Setebos |type=profile |url=http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Setebos |url-status=dead <!-- presumed --> |archive-url=https://web.archive.org/web/20070609142446/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Setebos |archive-date=2007-06-09}} via {{cite web |title=Solar System Exploration |publisher=NASA |url=http://solarsystem.nasa.gov}}
*{{cite web |first=D.C. |last=Jewitt |author-link=David C. Jewitt |date=c. 2008 |title=Hawaii Irregular Satellites Survey |department=Uranus' moons |publisher=[[University of Hawaiʻi]] |url=http://www.ifa.hawaii.edu/~jewitt/irregulars.html |url-status=dead |access-date=2023-08-03 |website=David Jewitt pages |archive-url=https://web.archive.org/web/20081226215022/http://www.ifa.hawaii.edu/~jewitt/irregulars.html |archive-date=2008-12-26}}
*{{cite web |first=S.S. |last=Sheppard |author-link=Scott S. Sheppard |title=Uranus' known satellites |url=http://www.dtm.ciw.edu/users/sheppard/satellites/urasatdata.html}}
*{{cite web |title=Natural satellites |department=Ephemeris service |website=Minor Planet Center (MPC) |publisher=[[Harvard–Smithsonian Center for Astrophysics]] (CfA) |url=http://www.minorplanetcenter.org/iau/NatSats/NaturalSatellites.html}} 

{{Moons of Uranus}}
{{Uranus}}
{{Solar System moons (compact)}}

{{DEFAULTSORT:Setebos (Moon)}}
[[Category:Moons of Uranus]]
[[Category:Irregular satellites]]
[[Category:Discoveries by Matthew J. Holman| ]]
[[Category:Discoveries by Brett J. Gladman]]
[[Category:Astronomical objects discovered in 1999|19990718]]
[[Category:Moons with a retrograde orbit]]
[[Category:The Tempest]]
{{natural-satellite-stub}}