1. Gleb Alexandrovich Chebotarev (1913–1975)

   • V. A. Brumberg

   In Memoriam Pages: ii - 396

2. Comments on the application of power series solutions to problems in celestial mechanics

   • Charles E. Roberts Jr.

   OriginalPaper Pages: 397 - 407

3. Estimation of unmodeled forces on a lunar satellite

   • B. D. Tapley
   • B. E. Schutz

   OriginalPaper Pages: 409 - 424

4. East-west stationkeeping requirements of 24-h satellites due to Earth's triaxiality and luni-solar effects

   • Ahmed Aly Kamel

   OriginalPaper Pages: 425 - 438

5. On relative periodic solutions of the planar general three-body problem

   • R. Broucke

   OriginalPaper Pages: 439 - 462

6. Poisson equations of rotational motion for a rigid triaxial body with application to a tumbling artificial satellite

   • Joseph J. F. Liu
   • Philip M. Fitzpatrick

   OriginalPaper Pages: 463 - 487

7. Conversion from geocentric to geodetic coordinates

   • Andre Deprit

   OriginalPaper Pages: 489 - 493

8. Mean rates of the orbital elements of a satellite perturbed by a lens shaped mass concentration

   • Mohan Ananda

   OriginalPaper Pages: 495 - 511

9. On Broucke's velocity-related series expansions in the two-body problem

   • Alan H. Jupp

   OriginalPaper Pages: 513 - 518

10. A note on the equilibrium points of the restricted problem of three bodies

    • Giorgio E. O. Giacaglia

    Technical Note Pages: 519 - 520

11. Abstracts of forthcoming papers

    Abstract Pages: 521 - 524

12. An extended ideal resonance problem

    • Boris Garfinkel

    Erratum Pages: 524 - 524