Abstract
Measurements obtained during the recent appearance of comet Halley suggest that its nucleus undergoes free and forced precession motions. Periodicities of 2.2 and 7.4 days can be explained by a 2.2-day rotation about the minor axis and a free-precessional period of 14.8 days.
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1. Sagdeev, R. Z. et al. Nature 321, 262–266 (1986). 2. Keller, H. U. et al. Nature 321, 320–326 (1986). 3. Sagdeev, R. Z. et al. Adv. Space Res. 512, 95–104 (1985). 4. Reitsema, H. J. et al. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 351–354 (European Space Agency, Noordwijk, Netherlands, 1986). 5. Sagdeev, R. Z. et al. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 335–338 (European Space Agency, Noordwijk, Netherlands, 1986). 6. Wilhelm, K. et al. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 367–369 (European Space Agency, Noordwijk, Netherlands, 1986). 7. Hughes, D. W. Man. Not. R. astr. Soc. 213, 103–109 (1985). 8. Divine, N. et al. Space Sci. Rev. 43, 1–104 (1986). 9. Bertaux, J. L. & Abergel, A. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 341–345 (European Space Agency, Noordwijk, Netherlands, 1986). 10. Greenberg, J. M. & Grim, R. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 255–263 (European Space Agency, Noordwijk, Netherlands, 1986). 11. Krasnopolsky, V. A. et al. Nature 321, 269–271 (1986). 12. Gringauz, K. I. et al. Nature 321, 282–285 (1986). 13. Krankowsky, D. et al. Nature 321, 326–329 (1986). 14. Festou, M. C. et al. Nature 321, 361–363 (1986). 15. Craven, D. J. et al. Geophys. Res. Lett. 13, 873–877 (1986). 16. Sagdeev, R. Z. et al. Nature 321, 259–262 (1986). 17. Sekanina, Z. & Larson, S. M. Astr. J. 89, 1408–1425 (1984). 18. Grim, E. et al. Nature 321, 144–147 (1986). 19. Kaneda, E. et al. Nature 320, 140–141 (1986). 20. Belton, M. J. et al. Proc. 20th ESLAB Symp. Vol. I. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 599–603 (European Space Agency, Noordwijk, Netherlands, 1986). 21. Whipple, F. L. & Sekanina, Z. Astr. J. 84, 1894–1909 (1979). 22. Millis, R. L. & Schleicher, D. G. Nature 324, 646–649 (1986). 23. Sekanina, Z. Nature 325, 326–328 (1987). 24. Smith, B. A. et al. Nature 326, 573–574 (1987). 25. Keller, H. U. et al. Proc. 20th ESLAB Symp. Vol. II. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 359–362 (European Space Agency, Noordwijk, Netherlands, 1986). 26. Landau, L. D. & Lifshitz, E. M. Course of Theoretical Physics, Vol. 1, 3rd edn (Pergamon, Oxford, 1976). 27. Julian, W. J. Nature 326, 57–58 (1987). 28. McDonnell, J. A. M. et al. Nature 321, 338–341 (1986). 29. Sagdeev, R. Z. et al. Nature 321, 259–262 (1986). 30. Sekanina, Z. & Larson, S. M. Astr. J. 92, 462–482 (1986). 31. Marsden, B. G. et al. Astr. J. 78, 211–225 (1973). 32. Morris, C. S. & Green, D. W. Astr. J. 87, 918–923 (1982). 33. Bortle, J. E. & Morris, C. S. Sky and Telescope 67, 9–12 (1984). 34. Weissman, P. R. Proc. 20th ESLAB Symp. Vol. III. Heidelberg, ESA SP–250 (eds B. Battrick, E. J. Rolfe & R. Reinhard) 517–522 (European Space Agency, Noordwijk, Netherlands, 1986).
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Wilhelm, K. Rotation and precession of comet Halley. Nature 327, 27–30 (1987). https://doi.org/10.1038/327027a0
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DOI: https://doi.org/10.1038/327027a0
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