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- W1981459659 abstract "The classical method of the determination of the orbital elements of meteoroids is based on a sequence of corrections applied to the velocity vector of an observed meteor. The main aim of such an approach is the determination of the meteoroid's motion under the gravitational influence of the Sun but we are able to observe this motion only under the additional influence of the Earth. The classical emthod treats this swith form the Earth's gravitional centre to the solar one as the process tacitly assumes that the size of the gravitational sphere of influence of the Earth is neglibible as compared with the size of this sphere of the Sun. In other words, the time the mteoroid needs to pass through the Earth's activity sphere is considered to be negligible in comparison with its orbital period. Assuming on the contrary to this calssical method that the time of the passage is finite, we should follow the meteoroid motion continuously in time from the moment of its apparition backwards to the moment the Sun's gravitational influence surely dominates. To do so, we have numerically integrated the equations of motion of meteoroids under the simultaneous action both of the Sun and the Earth form their time of the appearance in the atmosphere back to the moment the meteoroid-Earth distance reached at least 107 km to ensure the body was well outside the sphere of activity of the Earth. In order to visualize the photographed by the European fireball network. It is shown that the orbital elements following from the new method differ in general form those using the calssical approach, and the differences are not at all negligible. We can also draw the general conclusion that the slower the meteoroid the smaller is its eccentricity, as well as the semi-major axis as compared with their classical values." @default.
- W1981459659 created "2016-06-24" @default.
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- W1981459659 date "1994-08-01" @default.
- W1981459659 modified "2023-09-27" @default.
- W1981459659 title "On the determination of meteoroid orbital elements" @default.
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- W1981459659 doi "https://doi.org/10.1016/0032-0633(94)90047-7" @default.
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