Amalthea - Voyager imaging results

Details Amalthea - Voyager imaging results Amalthea - Voyager imaging results

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.8675v&link_type=abstract

Journal of Geophysical Research, vol. 86, Sept. 30, 1981, p. 8675-8682.

Physics

25

Amalthea, Planetary Surfaces, Voyager Project, Albedo, Colorimetry, Cratering, Jupiter, Satellites, Amalthea, Voyager, Imagery, Shape, Characteristics, Elongation, Surface, Features, Topography, Craters, Ridges, Reflectance, Magnitude, Albedo, Comparisons, Simulations, Color, Sulfur, Composition, Contamination, Source Medium, Photographs, Photometry, Data, Origin, Formation, Capture, Trojan Asteroids, Size

Scientific paper

Voyager images of Amalthea are presented, which reveal an irregular satellite in synchronous rotation relative to Jupiter with dimensions of 270 x 165 x 150 km. The surface appears scarred by large craters and sharp ridges to indicate a history of cosmic battering. Amalthea'a normal surface reflectance is 5-6% with a very red color and a mean opposition angle magnitude of +14. The phase coefficient between phase angles of 0.8 and 42 deg of 0.042 + or - 0.004 mag/deg indicates that the phase integral does not exceed 0.3 and the Bond Albedo is less than 0.02. Several prominent bright spots of 10-50 km across occur on local slopes and ridges, have albedos several times higher than the background, and have a greenish color where the spectrum bends down beyond 0.56 microns.

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