Results 131 to 140 of about 129,106 (151)

A Photometric Investigation of the Major Uranian Satellites

open access: yes
The Uranian system is one of the most unusual in the Solar System and its formation and evolution are poorly understood. Voyager 2 revealed that the major satellites have complex geologic features, including craters, fault systems, and chasmata. The Uranian system has been understudied and current knowledge is limit by a lack of data.
Colclasure, Abigail M.
openaire   +2 more sources

CCD astrometric observations of the five major Uranian satellites made in 1998–2007 and comparison with theory★

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
International audienceAn observational campaign of the five Uranian major satellites was carried out during the period 1998-2007. A total of 2358 satellite observations in 1025 CCD frames were taken at two observational stations near Beijing and Shanghai
K X Shen, Z H Tang, G Dourneau
exaly   +2 more sources

Astrometry in the Uranian system of satellites

AIP Conference Proceedings, 2008
The predicted occultation between the satellites Miranda(UV) and Oberon(UIV) was observed on July 30, 2007 using SpeX/IRTF system and CODAM‐Paris Observatory facility. Data analysis reveals that the predicted magnitude drop for this phenomenon was overestimated and we establish an upper limit of 0m.05 for the phenomenon, perhaps due to a non‐lambertian
Mirel Birlan   +4 more
openaire   +2 more sources

Surface properties and photometry of the Uranian satellites

Icarus, 1990
Voyager photographic images and photopolarimetric experiment observations have been used to obtain the spectral geometric and Bond albedos, phase integrals, color-dependent phase coefficients, and integrated solar phase-curve parameters of the five Uranian satellites Miranda, Ariel, Umbriel, Titania, and Oberon. While the results obtained confirm those
Bonnie Buratti   +2 more
openaire   +1 more source

Orbital Stability of the Uranian Satellite System☆

Icarus, 1997
Abstract We have numerically integrated approximately 500 systems of mutually gravitating bodies which were based on subsets of the uranian satellite system. In each run within a set, the satellite masses were initially multiplied by a common mass enhancement factormf.
M DUNCAN, J LISSAUER
openaire   +1 more source

The enigma of the Uranian satellites' orbital eccentricities

Icarus, 1985
The 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
openaire   +1 more source

Voyager 2 Photopolarimeter observations of the Uranian satellites

Journal of Geophysical Research: Space Physics, 1987
We report the ultraviolet (0.25 µm) and infrared (0.75 µm) geometric albedos, phase curves, and phase coefficients for the large Uranian satellites using full disk photometric observations obtained by the photopolarimeter subsystem during the Voyager 2 encounter with the Uranian system.
Robert M. Nelson   +7 more
openaire   +1 more source

Speculative histories of the Uranian satellite system

Icarus, 1988
The 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 ...
openaire   +1 more source

The Uranian satellites: Water ice on Ariel and Umbriel

Icarus, 1981
New 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
openaire   +1 more source

Models for planetary eclipses of the uranian satellites

Icarus, 2007
Abstract 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.
openaire   +1 more source

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