1. Planetary theory developments, 1973–1976

   • P. K. Seidelmann

   OriginalPaper Pages: 103 - 112

2. Gravitational potential of solid bodies in the solar system

   • G. Balmino
   • N. Borderies

   OriginalPaper Pages: 113 - 119

3. Periodic three body orbits in the case of small third mass

   • P. C. Kammeyer

   OriginalPaper Pages: 121 - 125

4. A short note on Hamiltonians linear in the momenta

   • P. Hagedorn

   BriefCommunication Pages: 127 - 129

5. A note on the averaging method

   • Hiroshi Kinoshita

   OriginalPaper Pages: 131 - 136

6. General time elements for the two body problem

   • Arnold Stokes

   OriginalPaper Pages: 137 - 144

7. The influence of satellite flexibility on orbital motion

   • A. K. Misra
   • V. J. Modi

   OriginalPaper Pages: 145 - 165

8. Disappearance of integrals in systems of more than two degrees of freedom

   • G. Contopoulos

   OriginalPaper Pages: 167 - 172

9. Keplerian motion and gyration

   • M. Vitins

   OriginalPaper Pages: 173 - 192

10. A geometric property of Hill's curves

    • Vladimír Matas

    OriginalPaper Pages: 193 - 194

11. Hill's Problem in lunar theory

    • Jacques Henrard

    OriginalPaper Pages: 195 - 204