The photometric roughness of Ariel is not unusual

Details The photometric roughness of Ariel is not unusual The photometric roughness of Ariel is not unusual

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...90..181s&link_type=abstract

Icarus (ISSN 0019-1035), vol. 90, March 1991, p. 181-183.

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Ariel, Satellite Surfaces, Surface Roughness, Voyager 2 Spacecraft, Astronomical Photometry, Spectral Reflectance, Uranus, Satellites, Ariel, Photometry, Roughness, Comparisons, Surface, Analysis, Parameters, Spacecraft Observations, Voyager 2 Mission, Physical Properties, Pps Instrument, Data Reduction, Procedure

Scientific paper

Voyager 2 images of the Uranian satellite Ariel are reanalyzed, with a focus on the large-scale roughness parameter theta-bar. The techniques used to reduce the data and fit the Hapke parameters are described, and the results are presented in tables and graphs. Using the whole-disk phase curve, theta-bar of 27 + or - 1 deg is obtained, somewhat higher than but in good general agreement with the values for the other Uranian satellites. The anomalously high value (42 deg) found by Helfenstein et al. (1988) is attributed to miscalibration of the clear-filter image for phase angle 144.7 deg.

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