“Prospero (moon)”的意思、由来-开放百科全书

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Prospero (moon)

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{{Infobox planet
| name = Prospero
| adjectives = Prosperonian, Prosperian
| image = Prospero discovery image.gif
| caption = Discovery image of Prospero.
| discoverer =

John J. Kavelaars
Brett J. Gladman
Matthew J. Holman
Jean-Marc Petit
Hans Scholl

| discovered = 18 July 1999
| mean_orbit_radius = 16,256,000 km{{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}}
| eccentricity = 0.4448
| period = 1978.29 d
| inclination = 152°{{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}} (to the ecliptic){{sfn|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3}}
| satellite_of = Uranus
| mean_radius = 25 km (estimate){{refn|name=Sheppard et al. 2005 radius/albedo}}
| surface_area = ~8000 km² (estimate)
| volume = ~65,000 km³ (estimate)
| mass = ~8.5{{e|16}} kg (estimate)
| surface_grav = ~0.0063 m/s² (estimate)
| escape_velocity = ~0.021 km/s (estimate)
| density = ~1.3 g/cm³ (assumed)
| rotation = ?
| axial_tilt = ?
| albedo = 0.04 (assumed){{refn|name=Sheppard et al. 2005 radius/albedo}}
| single_temperature = ~65 K (estimate)
}}

Prospero ({{IPAc-en|ˈ|p|r|ɒ|s|p|ər|oʊ}} {{Respell|PROS|pər-oh}}) is a relatively small retrograde irregular satellite of Uranus 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 Prospero in William Shakespeare's play The Tempest.

The orbital parameters suggest that it may belong to the same dynamic cluster as Sycorax and Setebos, suggesting common origin.^[3] 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),{{sfn|Grav|Holman|Fraser|2004|p=}} similar to Setebos but different from Sycorax (which is light red).

References

1. ^¹Grav, 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}}
2. ^{{harvnb|Sheppard|Jewitt|Kleyna|2005|p=523|loc=Table 3 ... rⁱ (km) ... 25 ... ⁱ Radius of satellite assuming a geometric albedo of 0.04}}.

^[1]^[2]
}}

{{cite journal| doi = 10.1086/424997| last1 = Grav| first1 = Tommy| last2 = Holman| first2 = Matthew J.| authorlink2 = 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| pmid = | pmc = | arxiv = astro-ph/0405605| bibcode = 2004ApJ...613L..77G| ref = harv}}
{{Cite journal | last1 = Sheppard | first1 = S. S. | last2 = Jewitt | first2 = D. | last3 = Kleyna | first3 = J. | title = An Ultradeep Survey for Irregular Satellites of Uranus: Limits to Completeness | doi = 10.1086/426329 | journal = The Astronomical Journal | volume = 129 | pages = 518 | year = 2005 | pmid = | pmc = |arxiv = astro-ph/0410059 |bibcode = 2005AJ....129..518S }}

External links

[https://web.archive.org/web/20070608214043/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Prospero Prospero Profile] by NASA's Solar System Exploration
David Jewitt pages
[https://web.archive.org/web/20080131134929/http://www.dtm.ciw.edu/sheppard/satellites/urasatdata.html Uranus' Known Satellites] (by Scott S. Sheppard)
MPC: Natural Satellites Ephemeris Service

4 : Moons of Uranus|Irregular satellites|Discoveries by Matthew J. Holman|Astronomical objects discovered in 1999

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See also

References

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