1. Constraints on the location of a putative distant massive body in the Solar System from recent planetary data

   • Lorenzo Iorio

   Original Article 21 December 2011 Pages: 117 - 130

2. Linear stability and shape analysis of spinning three-craft Coulomb formations

   • Erik A. Hogan
   • Hanspeter Schaub

   Original Article 16 December 2011 Pages: 131 - 148

3. Non-integrability of first order resonances in Hamiltonian systems in three degrees of freedom

   • Ognyan Christov

   Original Article 16 December 2011 Pages: 149 - 167

4. The two-body problem of a pseudo-rigid body and a rigid sphere

   • K. Uldall Kristiansen
   • M. Vereshchagin
   • R. M. Roberts

   Original Article 18 January 2012 Pages: 169 - 190

5. Low-thrust propulsion in a coplanar circular restricted four body problem

   • Marta Ceccaroni
   • James Biggs

   Original Article 18 January 2012 Pages: 191 - 219

6. Numerical integration of dynamical systems with Lie series

   • D. Bancelin
   • D. Hestroffer
   • W. Thuillot

   Original article 18 January 2012 Pages: 221 - 234