A procedure of selection of meteors from major streams for determination of mean orbits |
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| Authors: | L Neslu?an J Svoreň V Porub?an |
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| Institution: | (1) Astronomical Institute, Slovak Academy of Sciences, SK-059 6O Tatranská Lomnica, The Slovak Republic;(2) Astronomical Institute, Slovak Academy of Sciences, SK-842 28 Bratislava, The Slovak Republic |
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| Abstract: | A procedure of selection of meteoroids from major streams is suggested and applied to the IAU Lund photographic database modified by a check for internal consistency among orbital elements (3411 orbits). Limits for choice of stream members were defined by break points on the plots of the cumulative numberN
C vs. the Southworth-HawkinsD discriminant. For the break points were considered the points from which the dependenceN
C vs.D changes to a quasi-linear one, and with the increasingD, N
C changes only moderately. Except for the Taurids which desire a separate analysis, theN
C vs.D diagrams are presented for the following major meteoroid streams: Quadrantids, Lyrids, Aquarids, Capricornids, N and S Aquarids, Perseids, Orionids, Leonids and Geminids. The mean orbits, velocities and radiants of the streams are derived and compared with the osculating orbits of their parent bodies. The limitingD
B was found to be a function of the number of the stream membersN
CB. Omitting the exceptionally concentrated Geminids, the relation is in the formD
B = 0.058 *ln(N
CB) – 0.04. |
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| Keywords: | Meteoroid Streams Meteor Orbits Sporadic Background D-criterion |
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