Voyager photometry of Rhea, Dione, Tethys, Enceladus and Mimas

Details Voyager photometry of Rhea, Dione, Tethys, Enceladus and Mimas Voyager photometry of Rhea, Dione, Tethys, Enceladus and Mimas

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...58..254b&link_type=abstract

(IAU, COSPAR, NASA, et al., Colloquium on Natural Satellites, 77th, Cornell University, Ithaca, NY, July 5-9, 1983) Icarus (ISSN

Astronomy and Astrophysics

Astronomy

64

Astronomical Photometry, Dione, Enceladus, Mimas, Rhea (Astronomy), Tethys, Albedo, Color, Light Curve, Voyager 1 Spacecraft, Saturn, Satelliites, Voyager Missions, Photometry, Rhea, Dione, Mimas, Tethys, Enceladus, Imagery, Observations, Albedo, Lightcurves, Data, Amplitude, Characteristics, Surface, Terrain, Features, Phase Curves, Parameters, Colors

Scientific paper

Voyager imaging observations provide new photometric data on Saturn's satellites at large phase angles (up to 133 deg in the case of Mimas) not observable from earth. Significant new results include the determination of phase integrals ranging from 0.7 in the case of Rhea to 0.9 for Enceladus. For Enceladus an average geometric albedo 1.04 and a Bond albedo of 0.9 are found. The data indicate an orbital lightcurve with an amplitude of 0.2 mag, the trailing side being the brighter. For Mimas, the lightcurve amplitude is probably less than 0.1 mag. The value of the geometric albedo of Mimas reported here, is definitely higher than the currently accepted value of about 0.5. For Dione, the Voyager data show a well-defined orbital lightcurve of amplitude about 0.6 mag, with the leading hemisphere brighter than the trailing one.

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