Nodal regression of the quadrantid meteor stream: An analytic approach |
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| Authors: | CD Murray |
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| Institution: | Center for Radiophysics and Space Research, Space Sciences Building, Cornell University, Ithaca, New York 14853, USA |
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| Abstract: | The mean orbit of the Quadrantid meteor stream has a high eccentricity and inclination with an aphelion close to the orbit of Jupiter. The nodal regression rate, a quantity which has been well determined from observations, cannot be calculated with sufficient accuracy using standard low-order expansions of the disturbing function. By using a high-order expansion of the disturbing function we show how the behavior of the longitude of ascending node of the Quadrantid stream is a result of both secular and resonant effects. Our analysis illustrates how the proximity of the stream's orbit to the 2: 1 commensurability with Jupiter dominates the short-term variations in orbital elements. |
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