Planetary motion, sunspots and climate.

Abstract

Past attempts to link sunspots with gravitational attraction by planets or with the orbital motion of the Sun have not been successful. In this paper the changes in orbital angular momenta of planets due to gravitational perturbation are considered. Ninety-eight percent of the angular momentum of the solar system is contained in the orbital motion of the four giant planets Jupiter, Saturn, Uranus, and Neptune. The potential relevance of the motion of these giant planets to the sunspot variations is investigated. - Authors