1. Fundamental catalogues, past, present and future

   • W. Fricke

   OriginalPaper Pages: 207 - 239

2. Generalization of Szebehely's regions for asteroid stability

   • Alex Konopliv

   OriginalPaper Pages: 241 - 255

3. Evolution of families of double-and triple-periodic orbits

   • B. Barbanis

   OriginalPaper Pages: 257 - 271

4. On the collision probability for comets with the Sun

   • R. A. Serafin

   OriginalPaper Pages: 273 - 280

5. On the non-linear stability of motions around L₅ in the elliptic restricted problem of the three bodies

   • Judit Györgyey

   OriginalPaper Pages: 281 - 285

6. The invariance of the restricted problem of three bodies

   • D. J. Jezewski

   OriginalPaper Pages: 287 - 298