Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sci...237..512t&link_type=abstract
Science (ISSN 0036-8075), vol. 237, July 31, 1987, p. 512-514.
Astronomy and Astrophysics
Astronomy
36
Charon, Planetary Orbits, Planetary Structure, Planetology, Pluto (Planet), Albedo, Color, Density (Mass/Volume), Occultation, Radii, Rocks, Pluto, Pluto-Charon System, Orbits, Physical Properties, Parameters, Celestial Mechanics, Analysis, Earth-Based Observations, Occultations, Astronomy, Radius, Density, Mass, Color, Surface, Orbital Elements, Diagrams, Albedo, Photoelectric Methods, Brightness, Models
Scientific paper
Analysis of the observations of several Pluto-Charon occultation and transit events in 1985 and 1986 has provided a more detailed knowledge of the system. The sum of the radii of Pluto and Charon is 1786±19 kilometers, but the individual radii are somewhat more poorly determined; Pluto is 1145±46 kilometers in radius and Charon is 642±34 kilometers in radius. The mean density of the system is 1.84±0.19 grams per cubic centimeter implying that more than half of the mass is due to rock. Charon appears to have hemispheres of two different colors, the Pluto-facing side being neutral in color and the opposite hemisphere being a reddish color similar to Pluto.
Binzel Richard P.
Buie Marc William
Frueh Marian L.
Tholen David J.
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