"the solar system oscillates with a 60-year cycle due to the jupiter/saturn three-synodic cycle and to a jupiter/saturn beat tidal cycle...
"the solar system oscillates with a 60-year cycle due to the jupiter/saturn three-synodic cycle and to a jupiter/saturn beat tidal cycle...
saturn:632
"modeling the 5 : 2 mean-motion resonance in the jupiter-saturn planetary system".