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Cometary dynamics

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Abstract

The modern theory of cometary dynamics is based on Oort's hypothesis that the solar system is surrounded by a spherically symmetric cloud of 1011 to 1012 comets extending out to interstellar distances. Dynamical modeling and analysis of cometary motion have confirmed the ability of the Oort hypothesis to explain the observed distribution of energies for the long-period comet orbits. The motion of comets in the Oort cloud is controlled by perturbations from random passing stars, interstellar clouds, and the galactic gravitational field. Additionally, comets which enter the planetary region are perturbed by the major planets and by nongravitational forces resulting from jetting of volatiles on the surfaces of the cometary nuclei. The current Oort cloud is estimated to have a radius of 6 to 8 × 104 AU, and to contain some 2 × 1012 comets with a total mass of 7 to 8 Earth masses. Evidence has begun to accumulate for the existence of a massive inner Oort cloud extending from just beyond the orbit of Neptune to 104 AU or more, with a population up to 100 times that of the outer Oort cloud. This inner cloud may serve as a reservoir to replenish the outer cloud as comets are stripped away by the various perturbers, and may also provide a more efficient source for the short-period comets. Recent suggestions of an unseen solar companion star or a tenth planet orbiting in the inner cloud and causing periodic comet showers on the Earth are likely unfounded. The formation site of the comets in the Oort cloud was likely the extended nebula accretion disc reaching from about 15 to 500 AU from the forming protosun. Comets which escape from the Oort cloud contribute to the flux of interstellar comets, though capture of interstellar comets by the solar system is extremely unlikely. The existence of Oort clouds around other main sequence stars has been suggested by the detection by the IRAS spacecraft of cool dust shells around about 10% of nearby stars.

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References

  • Allen, C. W.: 1973, Astrophysical Quantities, Athlone Press, London, 251 pp.

    Google Scholar 

  • Alvarez, L. W., Alvarez, W., Asaro, F., and Michel, H. V.: 1980, Science 208, 1095.

    Google Scholar 

  • Alvarez, W. and Muller, R. A.: 1984, Nature 308, 718.

    Google Scholar 

  • Antonov, V. A. and Latyshev, I. N.: 1972, in G. A. Chebotarev and E. I. Kazimirchak-Polonskaya (eds.), The Motion, Evolution of Orbits, and Origin of Comets, D. Reidel Publ. Co., Dordrecht, p. 341.

    Google Scholar 

  • Aumann, H. H.: 1984, Bull. Am. Astron. Soc. 16, 483.

    Google Scholar 

  • Aumann, H. H., Gillett, F. C., Beichman, C. A., de Jong, T., Houck, J.R., Low, F., Neugebauer, G., Walker, R.G., and Wesselius, P.: 1984, Astrophys. J. 278, L23.

    Google Scholar 

  • Bailey, M. E.: 1983a, Monthly Notices Roy. Astron. Soc. 204, 603.

    Google Scholar 

  • Bailey, M. E.: 1983b, Nature 302, 399.

    Google Scholar 

  • Bailey, M. E.: 1983c, Monthly Notices Roy. Astron. Soc. 205, 47P.

  • Biermann, L. and Lüst, R.: 1978, Sitz. ber. Bayer. Akad. d. Wiss. Mat.-Nature, K1.

  • Biermann, L. and Michel, K. W.: 1978, Moon and Planets 18, 447.

    Google Scholar 

  • Brin, G. D. and Mendis, D. A.: 1979, Astrophys. J. 229, 402.

    Google Scholar 

  • Cameron, A. G. W.: 1962, Icarus 1, 13.

    Google Scholar 

  • Cameron, A. G. W.: 1973, Icarus 18, 407.

    Google Scholar 

  • Cameron, A. G. W.: 1978, in S. F. Dermott (ed.), The Origin of the Solar System, John Wiley and Sons, New York, p. 49.

    Google Scholar 

  • Carusi, A., Kresak, L., Perozzi, E., and Valsecchi, G. B.: 1984, Long Term Evolution of Short-Period Comets, Instituto di Astrofisica Spaziale, Rome, preprint No. 12.

    Google Scholar 

  • Chebotarev, G. A.: 1965, Soviet Astron. J. 8, 787.

    Google Scholar 

  • Chebotarev, G. A.: 1966, Soviet Astron. J. 10, 341.

    Google Scholar 

  • Clube, S. V. M. and Napier, W. M.: 1982, Quart. J. Roy. Astron. Soc. 23, 45.

    Google Scholar 

  • Clube, S. V. M. and Napier, W. M.: 1984, Monthly Notices Roy. Astron. Soc. 208, 575.

    Google Scholar 

  • Davis, M., Hut, P., and Muller, R. A.: 1984, Nature 308, 715.

    Google Scholar 

  • Delsemme, A. H.: 1973, Astron. Astrophys. 29, 377.

    Google Scholar 

  • Dermott, S. F. and Gold, T.: 1978, Astron. J. 83, 449.

    Google Scholar 

  • Donn, B.: 1976, in The Study of Comets, NASA SP-393, p. 663.

  • Drummond, J. D.: 1982, Icarus 49, 143.

    Google Scholar 

  • Everhart, E.: 1967, Astron. J. 72, 1002.

    Google Scholar 

  • Everhart, E.: 1968, Astron. J. 73, 1039.

    Google Scholar 

  • Everhart, E.: 1969, Astron. J. 74, 735.

    Google Scholar 

  • Everhart, E.: 1972, Astrophys. Letters 10, 131.

    Google Scholar 

  • Everhart, E.: 1976, in The Study of Comets, NASA SP-393, p. 445.

  • Everhart, E.: 1978, in A. H. Delsemme (ed.), Comets, Asteroids, and Meteorites, Interrelations, Evolution and Origins, Univ. Toledo Press, p. 99.

  • Faintich, M. B.: 1971, Doctoral dissertation, Univ. Illinois, 122 pp.

  • Fernandez, J. A.: 1980, Monthly Notices Roy. Astron. Soc. 192, 481.

    Google Scholar 

  • Fernandez, J. A.: 1981, Astron. Astrophys. 96, 26.

    Google Scholar 

  • Fernandez, J. A.: 1982, Astron. J. 87, 1318.

    Google Scholar 

  • Fernandez, J. A. and Ip, W.-H.: 1981, Icarus 47, 470.

    Google Scholar 

  • Fernandez, J. A. and Ip, W.-H.: 1983, in C.-I. Lagerkvist and H. Rickman (eds.), Asteroids, Comets, Meteors, Uppsala University, p. 387.

  • Goldreich, P. and Ward, W. R.: 1973, Astrophys. J. 183, 1051.

    Google Scholar 

  • Greenberg, R., Weidenschilling, S. J., Chapman, C. R., and Davis, D. R.: 1984, Icarus 59, 87.

    Google Scholar 

  • Grieve, R. A. F. and Dence, M. R.: 1979, Icarus 38, 230.

    Google Scholar 

  • Grieve, R. A. F.: 1982, Geol. Soc. Am. Special paper 190, 25.

    Google Scholar 

  • Hahn, G. and Rickman, H.: 1985, Icarus 61, 417.

    Google Scholar 

  • Halley, E.: 1705, A Synopsis of the Astronomy of Comets, London, 24 pp.

  • Hamid, S. E. and Whipple, F. L.: 1953, Astron. J. 58, 100.

    Google Scholar 

  • Hamid, S. E., Marsden, B. G., and Whipple, F. L.: 1968, Astron. J. 73, 727.

    Google Scholar 

  • Harper, D. A., Lowenstein, R. F., and Davidson, J. A.: 1984, Astrophys. J. 285, 808.

    Google Scholar 

  • Harrington, R. S.: 1985, Icarus 61, 60.

    Google Scholar 

  • Hills, J. G.: 1981, Astron. J. 86, 1730.

    Google Scholar 

  • Hills, J. G.: 1984, Nature 311, 636.

    Google Scholar 

  • Hut, P.: 1984, Nature 311, 638.

    Google Scholar 

  • Hut, P. and Tremaine, S.: 1985, Astrophys. J., in press.

  • Innanen, K. A.: 1979, Astron. J. 84, 960.

    Google Scholar 

  • Joss, P. C.: 1973, Aston. Astrophys. 25, 271.

    Google Scholar 

  • Kendall, D. G.: 1961, Proc. Fourth Berkeley Symp. on Mathematical Statistics and Probability 3, 99.

    Google Scholar 

  • Kazimirchak-Polonskaya, E. I.: 1972, in G. A. Chebotarev and E. I. Kazimirchak-Polonskaya (eds.), The Motion, Evolution of Orbits, and Origin of Comets, D. Reidel Publ. Co., Dordrecht, p. 373.

    Google Scholar 

  • Kresak, L.: 1981, Bull. Astron. Czech. 32, 321.

    Google Scholar 

  • Kresak, L.: 1984, Space Sci. Rev. 38, 1.

    Google Scholar 

  • Kuiper, G. P.: 1951, in J. A. Hynek (ed.), Astrophysics, McGraw Hill Book Co., New York, p. 357.

    Google Scholar 

  • Low, F. J., Beintema, D. A., Gautier, T. N., Gillett, F. C., Beichman, C. A., Neugebauer, G., Young, E., Aumann, H. H., Boggess, N., Emerson, J. P., Habing, H. J., Hauser, M. G., Houck, J. R., Rowan-Robinson, M., Soifer, B. T., Walker, R. G., and Wesselins, P. R.: 1984, Astrophys. J. 278, L19.

    Google Scholar 

  • Lowrey, B. E.: 1973, Astron. J. 78, 428.

    Google Scholar 

  • Lyttleton, R. A.: 1948, Monthly Notices Roy. Astron. Soc. 108, 465.

    Google Scholar 

  • Marsden, B. G.: 1967, Astron. J. 72, 1170.

    Google Scholar 

  • Marsden, B. G.: 1968, Astron. J. 73, 367.

    Google Scholar 

  • Marsden, B. G.: 1969, Astron. J. 74, 720.

    Google Scholar 

  • Marsden, B. G.: 1970a, Astron. J. 75, 75.

    Google Scholar 

  • Marsden, B. G.: 1970b, Astron. J. 75, 206.

    Google Scholar 

  • Marsden, B. G. and Sekanina, Z.: 1971, Astron. J. 76, 1135.

    Google Scholar 

  • Marsden, B. G., Sekanina, Z., and Yeomans, D. K.: 1973, Astron. J. 78, 211.

    Google Scholar 

  • Marsden, B. G., Sekanina, Z., and Everhart, E.: 1978, Astron. J. 83, 64.

    Google Scholar 

  • Marsden, B. G.: 1982, Catalogue of Cometary Orbits. Smithsonian Astrophysical Observatory, Cambridge, 97pp.

    Google Scholar 

  • McCrea, W. H.: 1975, Observatory 95, 239.

    Google Scholar 

  • McFadden, L. A., Gaffey, M. J., and McCord, T. B.: 1984, Icarus 58, 25.

    Google Scholar 

  • McFadden, L. A., Gaffey, M. J., and McCord, T. B.: 1985, Science, submitted.

  • Michels, D. J., Sheely, N. R. Jr., Howard, R. A., and Koomen, M. J.: 1982, Science 215, 1097.

    Google Scholar 

  • Napier, W. M. and Staniucha, M.: 1982, Monthly Notices Roy. Astron. Soc. 198, 723.

    Google Scholar 

  • Newton, H. A.: 1893, Mem. Natl. Acad. Sci. 6, 7.

    Google Scholar 

  • Oort, J. H.: 1950, Bull. Astron. Inst. Neth. 11, 91.

    Google Scholar 

  • Öpik, E. J.: 1932, Proc. Am. Acad. Arts Sci. 67, 169.

    Google Scholar 

  • Öpik, E. J.: 1963, Adv. Astron. Astrophys. 2, 219.

    Google Scholar 

  • Öpik, E. J.: 1971, Irish Astron. J. 10, 35.

    Google Scholar 

  • Ostro, S. J., Campbell, D. B., and Shapiro, I. I.: 1984, Bull. Am. Astron. Soc. 16, 692.

    Google Scholar 

  • Radzievskii, V. V.: 1981, Soviet Astron. J. 15, 32.

    Google Scholar 

  • Rampino, M. R. and Stothers, R. B.: 1984, Nature 308, 709.

    Google Scholar 

  • Raup, D. M. and Sepkoski, J. J. Jr.: 1984, Proc. Natl. Acad. Sci. 81, 805.

    Google Scholar 

  • Remy, F. and Mignard, F.: 1985, Icarus, in press.

  • Rickman, H.: 1976, Bull Astron. Czech. 27, 92.

    Google Scholar 

  • Rickman, H. and Froeschlé, C.: 1980, Moon and Planets 22, 125.

    Google Scholar 

  • Rickman, H.: 1985, in A. Carusi and G. B. Valsecchi (eds.), Dynamics of Comets, D. Reidel Publ. Co., Dordrecht, in press.

    Google Scholar 

  • Russell, H. N.: 1920, Astron. J. 33, 49.

    Google Scholar 

  • Russell, C. T., Aroian, R., Arghavani, M., and Nock, K.: 1984, Science 226, 43.

    Google Scholar 

  • Safronov, V. S.: 1969, Evolution of the Protoplanetary Cloud and Formation of the Earth and Planets, NASA TT F-677, 206 pp.

  • Schreur, B.: 1979, Doctoral dissertation, Florida State Univ., 109 pp.

  • Sekanina, Z.: 1967, Bull. Astron. Czech. 18, 369.

    Google Scholar 

  • Sekanina, Z.: 1968, Bull. Astron. Czech. 19, 343.

    Google Scholar 

  • Sekanina, Z.: 1976, Icarus 27, 123.

    Google Scholar 

  • Sekanina, Z.: 1978, Icarus 33, 173.

    Google Scholar 

  • Scholl, H., Casenave, A., and Brahic, A.: 1982, Astron. Astrophys. 112, 157.

    Google Scholar 

  • Schwartz, R. D. and James, P. B.: 1984, Nature 308, 712.

    Google Scholar 

  • Sheeley, N. R. Jr., Howard, R. A., Koomen, M. J., and Michels, D. J.: 1982, Nature 300, 239.

    Google Scholar 

  • Shoemaker, E. M. and Wolfe, R. F.: 1982, in D. Morrison. (ed.), The Satellites of Jupiter, Univ. Arizona Press, Tucson, p. 277.

    Google Scholar 

  • Shoemaker, E. M., and Wolfe, R. F.: 1984, Lunar & Planet. Sci. Conf. XV, 780 (abstract).

    Google Scholar 

  • Shoemaker, E. M. and Wolfe, R. F.: 1985, in R. Smoluchowski (ed.), The Galaxy and the Solar System, Univ. Arizona Press, Tucson, submitted.

    Google Scholar 

  • Smith, B. A. and Terrile, R. J.: 1984, Science 226, 1421.

    Google Scholar 

  • Smoluchowski, R. and Torbett, M.: 1984, Nature 311, 38.

    Google Scholar 

  • Thaddeus, P. and Chanan, G. A.: 1985, Nature 314, 73.

    Google Scholar 

  • Valtonen, M. J. and Innanen, K. A.: 1982, Astrophys. J. 225, 307.

    Google Scholar 

  • Valtonen, M. J.: 1983, Observatory 103, 1.

    Google Scholar 

  • Van Flandern, T. A.: 1978, Icarus 36, 51.

    Google Scholar 

  • van Woerkom, A. F. F.: 1948, Bull. Astron. Inst. Neth. 10, 445.

    Google Scholar 

  • Vsekhsvyatskii, S. K.: 1967, The Nature and Origin of Comets and Meteors, Prosveschcheniye Press, Moscow, 178 pp.

    Google Scholar 

  • Weissman, P. R.: 1978, Doctoral dissertation, University of California, Los Angeles, 255 pp.

    Google Scholar 

  • Weissman, P. R.: 1979a, in R. L. Duncombe (ed.), Dynamics of the Solar System, D. Reidel Publ. Co., Dordrecht, p. 277.

    Google Scholar 

  • Weissman, P. R.: 1979b, Astron. J. 84, 580.

    Google Scholar 

  • Weissman, P. R.: 1980a, Nature 288, 242.

    Google Scholar 

  • Weissman, P. R.: 1980b, Astron. Astrophys. 85, 191.

    Google Scholar 

  • Weissman, P. R.: 1982a, in L. L. Wilkening (ed.), Comets, Univ. Arizona Press, Tucson p. 637.

    Google Scholar 

  • Weissman, P. R.: 1982b, Geol. Soc. Am. Special Paper 190, 15.

    Google Scholar 

  • Weissman, P. R.: 1983a, Highlights of Astronomy 6, 363.

    Google Scholar 

  • Weissman, P. R.: 1983b, Icarus 55, 448.

    Google Scholar 

  • Weissman, P. R.: 1984a, Science 224, 987.

    Google Scholar 

  • Weissman, P. R.: 1984b, Nature 312, 380.

    Google Scholar 

  • Weissman, P. R.: 1985a, in A. Carusi and G. B. Valsecchi (eds.), Dynamics of Comets, D. Reidel Publ. Co., Dordrecht, in press.

    Google Scholar 

  • Weissman, P. R.: 1985b, in D. C. Black (ed.), Planets and Protostars II, Univ. Arizona Press, in press.

  • Whipple, F. L.: 1950, Astrophys. J. 111, 374.

    Google Scholar 

  • Whipple, F. L.: 1962, Astron. J. 67, 1.

    Google Scholar 

  • Whipple, F. L.: 1964, Proc. Natl. Acad. Sci. 51, 711.

    Google Scholar 

  • Whipple, F. L.: 1977, Icarus 30, 736.

    Google Scholar 

  • Whipple, F. L. and Sekanina, Z.: 1979, Astron. J. 84, 1894.

    Google Scholar 

  • Whipple, F. L.: 1983, IAU Circular, No. 3881.

  • Whitmire, D. P. and Jackson, A. A. Jr.: 1984, Nature 308, 713.

    Google Scholar 

  • Whitmire, D. P. and Matese, J. J.: 1984, Nature 313, 36.

    Google Scholar 

  • Yabushita, S.: 1972, Astron. Astrophys. 16, 395.

    Google Scholar 

  • Yeomans, D. K. and Kiang, T.: 1981, Monthly Notices Roy. Astron. Soc. 197, 633.

    Google Scholar 

  • Yeomans, D. K.: 1983, The Comet Halley Handbook (2nd edition), Jet Propulsion Laboratory document 400-91, 44 pp.

  • Zimbelman, J. R.: 1984, Icarus 57, 48.

    Google Scholar 

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    Paul R. Weissman

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Weissman, P.R. Cometary dynamics. Space Sci Rev 41, 299–349 (1985). https://doi.org/10.1007/BF00190654

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