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Contents

   



(Top)
  


1 See also  




2 References  




3 External links  













Prospero (moon)






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From Wikipedia, the free encyclopedia
  

Prospero
Discovery image of Prospero, taken by the CFHT in July 1999
Discovery
Discovered by
  • Brett J. Gladman
  • Matthew J. Holman
  • Jean-Marc Petit
  • Hans Scholl
    • Discovery date18 July 1999
    Designations

    Designation

    		Uranus XVIII
    Pronunciation/ˈprɒspɛroʊ/[1]
    AdjectivesProsperonian /prɒspɛˈroʊniən/,[2] Prosperian /prɒˈspɪəriən/[3]
    Orbital characteristics

    Mean orbit radius

    		16,256,000 km[4][5]
    Eccentricity0.4448[5]

    Orbital period (sidereal)

    		1978.29 d
    Inclination152°[4] (to the ecliptic)[4]
    Satellite ofUranus
    Physical characteristics

    Mean radius

    		25 km (estimate)[6]
    <50 km[7]

    Surface area

    		~8000 km2 (estimate)
    Volume~65,000 km3 (estimate)
    Mass~8.5×1016 kg (estimate)

    Mean density

    		~1.3 g/cm3 (assumed)

    Surface gravity

    		~0.0063 m/s2 (estimate)

    Escape velocity

    		~0.021 km/s (estimate)

    Synodic rotation period

    		7.145±0.092 h[7]

    Axial tilt

    		?
    Albedo0.04 (assumed)[6]
    Temperature~65 K (estimate)

    Prospero is a relatively small retrograde irregular satelliteofUranus discovered on 18 July 1999 by the astrophysicist Matthew Holman and his team, and given the provisional designation S/1999 U 3. Confirmed as Uranus XVIII it was named after the sorcerer ProsperoinWilliam Shakespeare's play The Tempest.

    Animation of discovery images to show Prospero's motion among background stars

    The orbital parameters suggest that it may belong to the same dynamic cluster as Sycorax and Setebos, suggesting common origin.[8] 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=0.80, R−V=0.39),[9] similar to Setebos but different from Sycorax (which is light red).

    See also

    [edit]

    References

    [edit]
    1. ^ Benjamin Smith (1903), The Century Dictionary and Cyclopedia
  • ^ Emenyonu, Ernest (2003), Emerging perspectives on Chinua Achebe, v. 1.
  • ^ in scare quotes in Bate (1997) The genius of Shakespeare
  • ^ a b c Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3.
  • ^ a b Yeomans, Donald K. (28 June 2007). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Retrieved 19 January 2008.
  • ^ a b Sheppard, Jewitt & Kleyna 2005, p. 523, Table 3 ... ri (km) ... 25 ... i Radius of satellite assuming a geometric albedo of 0.04.
  • ^ a b Farkas-Takács, A.; Kiss, Cs.; Pál, A.; Molnár, L.; Szabó, Gy. M.; Hanyecz, O.; et al. (September 2017). "Properties of the Irregular Satellite System around Uranus Inferred from K2, Herschel, and Spitzer Observations". The Astronomical Journal. 154 (3): 13. arXiv:1706.06837. Bibcode:2017AJ....154..119F. doi:10.3847/1538-3881/aa8365. S2CID 118869078. 119.
  • ^ Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare Photometric survey of the irregular satellites, Icarus, 166, (2003), pp. 33–45. arXiv:astro-ph/0301016
  • ^ Grav, Holman & Fraser 2004.
    • [edit]

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Prospero_(moon)&oldid=1211553587"
    Categories: 
    ●Moons of Uranus
     ●Irregular satellites
     ●Discoveries by Matthew J. Holman
     ●Discoveries by Brett J. Gladman
     ●Astronomical objects discovered in 1999
     ●Moons with a retrograde orbit
     Hidden categories: 
    ●Articles with short description
     ●Short description matches Wikidata
      


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