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The enigma of the Uranian satellites' orbital eccentricities
Icarus, 1985The eccentricity decay times for the Uranian satellites are calculated using recent observations (Brown et al., 1982) of the diameters and orbital elements of the satellites and assuming reasonable dissipation functions and rigidities for icy satellites.
Steven W. Squyres +2 more
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Speculative histories of the Uranian satellite system
Icarus, 1988The hypothetical histories presently considered for the Uranian satellite system are very sensitive to the assumed satellite masses, within the errors of their determinations, as well as to the Uranian tidal effective dissipation function. A determination is made of the resonances that could have been encountered in these histories, and of the orbital ...
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The Uranian satellites: Surface compositions and opposition brightness surges
Icarus, 1983The present, 5 percent-resolution spectrophotometry for the Uranian satellites Ariel, Umbriel, Titania and Oberon cover the 1.43-2.57 wavelength region and confirm the presence of a spectrally dominant water ice component in their surfaces. The 1.5- and 2.0-micron water absorption band depths and continuum reflectance indicate significant differences ...
Robert Hamilton Brown +1 more
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The Uranian satellites: Water ice on Ariel and Umbriel
Icarus, 1981New near-infrared reflectance spectra are presented for Ariel and Umbriel. Water ice on the surface of Ariel and Umbriel is verified from spectral signatures in the 2-micron region. However, the weaker bands in Umbriel's spectrum indicate that its surface is significantly different from Ariel either in degree of contamination with dark material or in ...
Dale P. Cruikshank, R. Hamilton Brown
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Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
Newly processed global imaging and topographic mapping of Uranus's five major satellites reveal differences and similarities to mid-sized satellites at Saturn and Pluto. Three modes of internal heat redistribution are recognized. The broad similarity of Miranda's three oval resurfacing zones to those mapped on Enceladus and (subtly) on Dione are likely
Paul M. Schenk, Jeffrey M. Moore
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Newly processed global imaging and topographic mapping of Uranus's five major satellites reveal differences and similarities to mid-sized satellites at Saturn and Pluto. Three modes of internal heat redistribution are recognized. The broad similarity of Miranda's three oval resurfacing zones to those mapped on Enceladus and (subtly) on Dione are likely
Paul M. Schenk, Jeffrey M. Moore
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A note on the possibility of subsurface oceans on the uranian satellites
Icarus, 2022Abstract We use an existing thermal evolution model to assess the plausibility of subsurface oceans on the moons of Uranus. We adopt a conservative approach neglecting tidal heating and find that Titania and Oberon could support a subsurface ocean to the present day if conductive heat loss through the ice shell is limited.
Carver J. Bierson, Francis Nimmo
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Mutual events of the uranian satellites 2006–2010
Icarus, 2005Abstract The upcoming crossing of the Sun and the Earth through the equatorial plane of the planet Uranus presents an opportunity to observe mutual eclipses and occultations of the uranian satellites. We present predictions for 321 such events from 2006 to 2010. 230 of these events are “nominal” i.e. they are predicted to occur based on the currently
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Models for planetary eclipses of the uranian satellites
Icarus, 2007Abstract A model for computing the brightness of a satellite in the shadow of a planet is described, which takes into account the Sun–planet–satellite–sensor geometry, the satellite bi-directional reflectance function, and the refraction of sunlight in the planetary atmosphere.
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A new dynamical model for the Uranian satellites
Planetary and Space Science, 2008Abstract We have developed a new dynamical model of the main Uranian satellites, based on numerical integration and fitted to astrometric observations. Old observations, as well as modern and Voyager observations have been included. This model has provided ephemerides that have already been used for predicting the mutual events during the PHE-URA ...
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Comparative global albedo and color maps of the Uranian satellites
Icarus, 1991The surfaces of the Uranian satellites Ariel, Miranda, Oberon, Titania, and Umbriel are characterized on the basis of Voyager observations. Tables of spectrophotometric data and maps of normal reflectances, green/violet ratios, and possible geological formations are presented and discussed in detail. Variations in albedo are found to be associated with
Bonnie J. Buratti, Joel A. Mosher
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