Dynamics of Pluto and Charon

Details Dynamics of Pluto and Charon Dynamics of Pluto and Charon

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1217d&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Nov. 1989, p. 1217-1220.

Astronomy and Astrophysics

Astronomy

2

Astrodynamics, Charon, Planetary Orbits, Pluto (Planet), Neptune (Planet), Solar System, Voyager 2 Spacecraft

Scientific paper

The dynamics of the Pluto-Charon system are reviewed from a historical perspective. Although Pluto's orbit crosses Neptune's, an intricate system of nested resonances keeps these planets apart. Pluto's orbit is apparently chaotic as well. Pluto always keeps the same face turned toward Charon, and vice versa. Tides also damp Charon's orbital eccentricity and inclination. Precession of Pluto's orbital plane causes Pluto's obliquity to vary periodically from formally prograde to retrograde. Pluto is probably an original member of the Solar system, but not an escaped satellite of Neptune.

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