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arXiv · 2012.12172

A Photometric and Dynamic Study of Comet C/2013 A1 (Siding Spring) from Observations at a Heliocentric Distance of ~4.1 AU

Yu. S. Andrienko·A. V. Golovin·A. V. Ivanova·V. N. Reshetnik·S. N. Kolesnik·S. A. Borisenko
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Abstract

An analysis is presented for the photometric data on comet C/2013 A1 (Siding Spring) from observations at a large heliocentric distance (near 4.1 AU). Comet C/2013 A1 (Siding Spring) displays intense activity despite the relatively large heliocentric distance. The morphology of the comet's coma is analyzed. The following parameters are measured: the color indices V-R, the normalized spectral gradient of the reflectivity of the comet's dust S', and the dust production rate Af\r{ho}. A numerical simulation is performed for the evolution of the comet's orbit after a close encounter with Mars. The most probable values are obtained for the Keplerian orbital elements of the comet over a hundred-year period. The comet's orbit remains nearly parabolic after passing the orbits of all the Solar System planets.

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Yu. S. Andrienko, A. V. Golovin, A. V. Ivanova, V. N. Reshetnik, S. N. Kolesnik, S. A. Borisenko. 2020-12-22. A Photometric and Dynamic Study of Comet C/2013 A1 (Siding Spring) from Observations at a Heliocentric Distance of ~4.1 AU. https://doi.org/10.1134/s0038094616020015

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