Lyapunov Orbits at L2 and Transversal Intersections of Invariant   Manifolds in the Jupiter-Sun Planar Restricted Circular Three Body Problem
  We present a computer assisted proof of existence of a family of Lyapunov orbits which stretches from L2 up to half the distance to the smaller primary in the Jupiter-Sun planar restricted circular three body problem. We then focus on a small family of Lyapunov orbits with energies close to comet Oterma and show that their associated invariant manifolds intersect transversally. Our computer assisted proof provides explicit bounds on the location and on the angle of intersection. 
Maciej J. Capinski
math.DS