The Astronomical Journal · 1965 · 266 citations · 0 references
Natural SciencesAstronomyPhysicsAstrophysicsPlanetary ScienceSolar AstronomySolar Active RegionsSolar CycleSolar OscillationsSolar PhysicsSolar System AstronomySolar Activity CyclesSolar Cycle DynamicsSolar Cycle VariabilitySolar Cycle VariationsSunspot Number
The investigation discloses that the variation in the motion of the sun about the center of mass of the solar system has a periodicity of 178.7 yr. The sunspot cycle is found to have the same period. Although the oscillations in the sunspot numbers and in the sun's motion are not in perfect agreement, the few departures that do occur, occur under very similar conditions.