Amalthea's Density Is Less Than That of Water

Details Amalthea's Density Is Less Than That of Water Amalthea's Density Is Less Than That of Water

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sci...308.1291a&link_type=abstract

Science, Volume 308, Issue 5726, pp. 1291-1293 (2005).

Computer Science

22

Scientific paper

Radio Doppler data from the Galileo spacecraft's encounter with Amalthea, one of Jupiter's small inner moons, on 5 November 2002 yield a mass of (2.08 +/- 0.15) ×1018 kilograms. Images of Amalthea from two Voyager spacecraft in 1979 and Galileo imaging between November 1996 and June 1997 yield a volume of (2.43 +/- 0.22) ×106 cubic kilometers. The satellite thus has a density of 857 +/- 99 kilograms per cubic meter. We suggest that Amalthea is porous and composed of water ice, as well as rocky material, and thus formed in a cold region of the solar system, possibly not at its present location near Jupiter.

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