John Dormand was at York University in the period 1968 to 1970 exploring Woolfson's capture theory of the origin of the solar system. The computer facilities at York were not sufficient to do the necessary complex simulations so these were done on the Chilton Atlas.
The work resulted in the paper The Capture Theory and Planetary Condensation published in the Monthly Notices of the Royal Astronomical Society in 1971:
In 1964 a capture theory of the origin of the solar system was put forward by Woolfson. It was proposed that the Sun could have captured planetary material from a light, diffuse star by tidal forces during an encounter, and it was shown that for some set of parameters the captured material could take up a range of orbits around the Sun with perihelia comparable to those observed in the solar system.
Later, John Dormand moved to Teeside University where he pursued an interest in Numerical Methods for Differential Equations, in particular a family of embedded Runge-Kutta formulae.
He published a book: Origin of the Solar System: The Capture Theory in 1989 and Numerical Methods for Differential Equations: A Computational Approach in 1996.