Nongravitational Forces on Comets: An Extension of the Standard Model

Details Nongravitational Forces on Comets: An Extension of the Standard Model Nongravitational Forces on Comets: An Extension of the Standard Model

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aj....142...81a&link_type=abstract

The Astronomical Journal, Volume 142, Issue 3, article id. 81 (2011).

Astronomy and Astrophysics

Astronomy

Celestial Mechanics, Comets: Individual: 19P 22P 24P 46P 64P 67P 71P

Scientific paper

The accuracy of comet orbit computations is limited by uncertain knowledge of the recoil force due to outgassing from the nuclei. The standard model assumes an exponential dependence of the force on distance from the Sun. This variable force times constants A 1, A 2, and A 3 represents the radial, transverse, and normal components of the net force. Orbit solutions show that the As often vary considerably over a few apparitions of the comets. In this paper, we allow for time variations of the As, and we show that for several comets this improves the orbit accuracy considerably.

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