Astronomy and Astrophysics – Astronomy
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...74..231h&link_type=abstract
Icarus (ISSN 0019-1035), vol. 74, May 1988, p. 231-239.
Astronomy and Astrophysics
Astronomy
48
Astronomical Photometry, Backscattering, Planetary Surfaces, Surface Roughness, Uranus Satellites, Ariel, Miranda, Umbriel, Voyager Project, Uranus, Satellites, Photometry, Spacecraft Observations, Miranda, Ariel, Voyager 2 Mission, Umbriel, Titania, Oberon, Albedo, Analysis, Porosity, Roughness, Comparisons, Regolith, Parameters, Scattering, Particles
Scientific paper
An attempt is presently made to obtain improved determinations of the geometric albedos and phase integrals of Miranda, Ariel, Umbriel, Titania, and Oberon, by fitting Hapke's (1981, 1984, 1986) photometric theory to Voyager whole-disk observations of these satellites. It is analytically established that while Umbriel, Titania and Oberon have large-scale roughness comparable to that of the earth's moon, Ariel is significantly rougher. While the particle single scattering albedo is strikingly different among the satellites, the degrees of regolith particle backscattering are very similar.
Helfenstein Paul
Thomas Peter C.
Ververka J.
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