The interiors of Pluto and Charon - Structure, composition, and implications

Details The interiors of Pluto and Charon - Structure, composition, and implications The interiors of Pluto and Charon - Structure, composition, and implications

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1209s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Nov. 1989, p. 1209-1212.

Physics

8

Charon, Planetary Composition, Planetary Mass, Planetary Structure, Pluto (Planet), Carbon Monoxide, Icy Satellites, Planetary Cores, Solar Corona

Scientific paper

Recent models of the internal structure of Pluto and Charon, made possible by analysis of the Pluto/Charon mutual events are reviewed. At a mean density of just over 2 g/cu cm and a predicted rock mass fraction of roughly 0.7, the Pluto/Charon system is significantly rockier than the icy satellites of the giant planets, a contrast which may reflect its formation in a CO-rich outer solar nebula rather than a circumplanetary nebula. Pluto and Charon may in fact be so rocky that they lost volatiles early in their history (possibly during a Charon-forming impact event), although this is still an open issue.

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