Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001astl...27..404v&link_type=abstract
Astronomy Letters, vol. 27, p. 404-409 (2001)
Astronomy and Astrophysics
Astronomy
1
Uranus'S Outer Satellites, Orbital Evolution
Scientific paper
Data on three recently discovered satellites of Uranus are used to determine basic evolutional parameters of their orbits: the extreme eccentricities and inclinations, as well as the circulation periods of the pericenter arguments and of the longitudes of the ascending nodes. The evolution is mainly investigated by analytically solving Hill's double-averaged problem for the Uranus-Sun-satellite system, in which Uranus's orbital eccentricity e_U and inclination i_U to the ecliptic are assumed to be zero. For the real model of Uranus's evolving orbit with e_U and i_U unequal to 0, we refine the evolutional parameters of the satellite orbits by numerically integrating the averaged system. Having analyzed the configuration and dynamics of the orbits of Uranus's five outer satellites, we have revealed the possibility of their mutual crossings and obtained approximate temporal estimates.
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