Volume 387, 15 November 2022, 115175

Research Paper
The meteor shower complex of comet 109P/Swift-Tuttle based on its cloned orbits

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Sophisticated models of meteoroid stream of comet 109P/Swift-Tuttle.

Association of 109P with the Perseids, #7, clearly confirmed.

Association with the 49 Andromedids, #549, ζ-Cassiopeiids, #444, u-Andromedids, #507, and UY Lyncids, #705, indicated.


Comet 109P/Swift-Tuttle is the well-known parent body of the Perseid meteor shower, and, possibly, a few other showers, as we found in our previous work (Paper I). In Paper I, we studied the meteoroid stream of the comet using models derived from the comet’s nominal orbit. In respect to the uncertainty of its determination, the nominal orbit did not appear to be the most probable orbit. Furthermore, our modeling predicted the semi-major axes of Perseids typically larger than the published mean semi-major axis of this shower by some authors. In this paper, we repeat the modeling, in the same way as in Paper I, except we derive the models of the stream from two cloned orbits of the nominal orbit. The first clone attempts to fit the most probable 109P’s orbits and the second clone had, in a certain period in the past, the smallest semi-major axis among all constructed clones. We confirmed the clear relationship of 109P with the Perseids, #7, and, with regard to the stronger influence of non-gravitational forces, its relationship with the 49 Andromedids, #549. Furthermore, we found an indication that parts of the stream meteoroids of 109P, which have long evolutionary periods, may correspond to the ζ-Cassiopeiids, #444, u-Andromedids, #507, and UY Lyncids, #705. However, the modeling based on the cloned orbits did not result, in general, in a better match of our prediction with the real showers (mainly Perseids) than the modeling described in Paper I, which was based on the nominal orbit of 109P.


Comet 109P/Swift-Tuttle
Perseids, #7
ζ-Cassiopeiids, #444
u-Andromedids, #507
49 Andromedids, #549
UY Lyncis, #705

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