Abstract
The role of non-gravitational forces in the evolution of orbitalmotion of C/1995 O1 (Hale–Bopp) has been investigated. Inorbital calculations the observational material covering theperiod from April 1993 up to August 2001 was used. To model thenon-gravitational acceleration, observed and theoretical profilesof the H2O production rates were employed. A set of forcedprecession models of a rotating cometary nucleus consistent withthe observed spin axis orientation was fitted to positionalobservations. The non-gravitational models allowed us to constrainthe mass and radius of the comet. The orbitalevolution of Comet Hale–Bopp was investigated over ±400 k yusing two sets of randomly varied orbital elements wellrepresenting all positional observations in the pure gravitationalcase, as well as in the non-gravitational case. The calculationsshowed that the comet's motion is predictable only over an interval ofa few orbital periods. The statistical conclusions changesignificantly when non-gravitational effects are included in the analysis.
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Bailey, M. E., Emel'yanenko, V. V., Hahn, G. et al.: 1997, M.N.R.A.S. 281, 916–924.
Bielicki, M. and Sitarski, G.: 1991, Acta Astron. 41, 309–323.
Biver, N., Bockelée-Morvan, D., Colom, P., Crovisier, J., Germain B. et al.: 1997, Earth Moon Planets 78, 5–11.
Colom, P., Gerard, E., Crovisier, J., Bockelée-Morvan, D., Biver, N., and Rauer, H.: 1997 Earth Moon Planets 78, 37–43.
Combi, M. R., Reinard, A. A., Bertaux, J. L., and Quemerais, E.: 2000, Icarus 144, 191–202.
Crovisier, J., Leech, K., Bockelée-Morvan, D., Lellouch, E. et al.: 1999, ESA SP-427, 137–140.
Dello Russo, N., Mumma, M. J., DiSanti, M. A. et al.: 2000, Icarus 143 324–337.
Jorda, L., Rembor, K., Lecacheux, J., Colom, P., Colas, F., Frappa, E., and Lara, L. M.: 1997, Earth Moon Planets 77, 167–180.
Licardo, J., Bellot Rubio, L. R., Casa, R., Gomez, A., Kidger, M. R., Sabalisk, N., Santos-Sanz, P. et al.: 1997, Earth Moon Planets 77, 199–206.
Marsden, B. G.: 1997, Earth Moon Planets 79, 3–15.
Marsden, B. G., Sekanina, Z., and Yeomans, D. K.: 1973, Astron. J. 78, 211–225.
Rickman, H., Kamel, L., Festou, M. C., and Froeschle, Cl.: 1987, in Diversity and Similarity of Comets, ESA SP-278, 471–481.
Sekanina, Z.: 1988, Astron. J. 95, 911–924.
Sekanina, Z.: 1998, Astrophys. J. 494, L121-L124.
Sitarski, G.: 1989, Acta Astron. 39, 345–349.
Sitarski, G.: 1998, Acta Astron. 48, 547–561.
Stern, S. A., Colwell, W. B., Festou, M. C., Tamblyn, P. M., Parker, J. W., Slater, D. C., Weissman, P. R., and Paxton, L. J.: 1999, Astron. J. 118, 1120–1125.
Weaver, H. A. and Lamy, P. L.: 1997, Earth Moon Planets 79, 17–33.
Weaver, H. A., Feldman, P, D., A'Hearn, M. F., Arpigny, C., Brandt, J. C., and Stern, S. A.: 1999, Icarus 141, 1–12.
Whipple, F. L. and Sekanina, Z.: 1979, Astron. J. 84, 1894–1909.
Woods, T. N., Feldman, P. D., and Rottman, G. J.: 2000, Icarus 144, 182–186.
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Szutowicz, S., Królikowska, M. & Sitarski, G. A Study of Non-Gravitational Effects of Comet C/1995 O1 HALE–BOPP. Earth Moon Planet 90, 119–130 (2002). https://doi.org/10.1023/A:1021572603632
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DOI: https://doi.org/10.1023/A:1021572603632