1. Solutions and periodicity of satellite relative motion under even zonal harmonics perturbations

   • Vladimir Martinuşi
   • Pini Gurfil

   Original Article 13 September 2011 Pages: 387 - 414

2. Three-dimensional time optimal double angular momentum reversal trajectory using solar sails

   • Xiangyuan Zeng
   • Hexi Baoyin
   • Shengping Gong

   Original article 05 August 2011 Pages: 415 - 430

3. Dynamics of a particle under the gravitational potential of a massive annulus: properties and equilibrium description

   • Eva Tresaco
   • Antonio Elipe
   • Andrés Riaguas

   Original article 22 September 2011 Pages: 431 - 447

4. High order normal form construction near the elliptic orbit of the Sitnikov problem

   • Sara Di Ruzza
   • Christoph Lhotka

   Original Article 22 September 2011 Pages: 449 - 464

5. Global geometry of non-planar 3-body motions

   • Mahdi Khajeh Salehani

   Original article 28 October 2011 Pages: 465 - 479