Research Articles

Numerical Evidence That the Motion of Pluto Is Chaotic

See allHide authors and affiliations

Science  22 Jul 1988:
Vol. 241, Issue 4864, pp. 433-437
DOI: 10.1126/science.241.4864.433


The Digital Orrery has been used to perform an integration of the motion of the outer planets for 845 million years. This integration indicates that the long-term motion of the planet Pluto is chaotic. Nearby trajectories diverge exponentially with an e-folding time of only about 20 million years.