Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....92l...1b&link_type=abstract
Astronomy and Astrophysics, vol. 92, no. 1-2, Dec. 1980, p. L1-L4. In French.
Astronomy and Astrophysics
Astrophysics
33
Astrometry, Charon, Image Resolution, Interferometry, Pluto (Planet), Speckle Patterns, Telescopes, Autocorrelation, Diameters, Planetary Mass, Solar Orbits
Scientific paper
The 3.60 m CFH telescope was used to perform the first resolution of the Pluto-Charon system. Charon is the faintest object to be resolved by speckle interferometry. The diameters of Pluto and Charon were derived to be 4000 and 2000 km, respectively; the albedos were found to be almost identical, 0.20; the inclination of Charon's orbit was found to be 100 deg, the radius of orbit 2200 km, and the total mass of the system 2 x 10 to the 25th g; mass densities were found to be 1.8 x 10 to the 25th g for Pluto and 2 x 10 to the 24th g for Charon. These results point to a common origin of Pluto and Charon (e.g., the encounter of Neptune with a large planet).
Bonneau Damien
Foy Renaud
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