Precession of the epsilon ring of Uranus

Details Precession of the epsilon ring of Uranus Precession of the epsilon ring of Uranus

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979aj.....84.1638g&link_type=abstract

Astronomical Journal, vol. 84, Oct. 1979, p. 1638-1641 No. PHY-77-20612;

Astronomy and Astrophysics

Astronomy

42

Gravitational Effects, Precession, Uranus Rings, Ellipses, Kepler Laws, Natural Satellites, Particle Collisions, Uranus, Rings, Quadrupole Moments, Mass, Density, Eccentricity, Gravity, Satellites, Precession, Particles, Collisions, Pressure, Gradients

Scientific paper

It is noted that the outer and inner boundaries of the epsilon ring of Uranus can be fitted by aligned Keplerian ellipses. Four possible mechanisms for maintaining uniform precession in the epsilon ring are considered: the ring's self-gravity, precession due to a satellite, smooth pressure gradients, and shocklike phenomena. It is proposed that apse alignment is maintained by the self-gravity of the ring. In this case, a ring mass of approximately 5 x 10 to the 18th g and a mean surface density at quadrature of about 25 g/sq cm are estimated.

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