Mass distribution of lyrid meteoroids |
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| Authors: | O I Bel’kovich M G Ishmukhametova |
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| Institution: | 1.Kazan State University,Kazan,Russia;2.Engelhardt Astronomical Observatory,Kazan,Russia;3.Zelenodol’sk Branch,Kazan State University,Zelenodol’sk,Russia |
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| Abstract: | Long-term visual observations of the Lyrid meteoroid shower have been analyzed to determine the mass distribution of Lyrid
meteoroids. The value of the parameter S has been confirmed to be less than 1.8, which is normally assumed for meteoroid streams. The inclination of the descending
and ascending branches of the S curve, depending on the longitude of the Sun, does not seem to exceed 3°. Observations carried out from 1987 until 2007 reveal
that the minimum value of S corresponding to the longitude of the Sun 32.19 ± 0.04° is equal to 1.54 ± 0.02 (2000.0). The analysis of the S parameter derived from visual observations did not discover any particularities in the mass distribution of the meteoroids
in the stream connected with the assumed 12-year enhancement period in the activity of the Lyrids. |
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