Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...122..251x&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 122, no. 1-2, June 1983, p. 251-254.
Astronomy and Astrophysics
Astrophysics
5
Celestial Mechanics, Gravitational Fields, Orbital Mechanics, Solar System, Asteroids, Curves (Geometry), Kepler Laws, Satellite Orbits
Scientific paper
Necessary and sufficient conditions are obtained for the following version of the inverse problem: four monoparametric families of planar curves are orbits of a unit mass, moving in an autonomous (not necessarily conservative) force field, in a dynamical system with two degrees of freedom. It is found that, in the generic case, the forces are obtained essentially uniquely. As an application, Newton's law of gravitation is derived from four given co-planar and co-focal families of ellipses; the major axis is taken as the parameter along each family, whereas all members of each family have the same eccentricity and orientation.
Bozis George
Xanthopoulos Basilis C.
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