Physics
Scientific paper
Oct 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aujph..28..591g&link_type=abstract
Australian Journal of Physics, vol. 28, Oct. 1975, p. 591-620. Research supported by the Radio Research Board of Australia and U
Physics
23
Meteoroid Showers, Orbit Calculation, Southern Hemisphere, Annual Variations, Arietid Meteoroids, Comets, Eccentric Orbits, Geminid Meteoroids, Orionid Meteoroids, Perseid Meteoroids, Tables (Data), Taurid Meteoroids
Scientific paper
Meteor orbits have been deduced from radio observations of meteor trails carried out at Adelaide, Australia, using a combined multistation CW and pulse radar system operating at 27 MHz. The orbits of 1667 meteors have been determined down to a limiting radio magnitude of +8. The data have been systematically searched for stream meteors, and the significance of minor associations has been appraised. Altogether, 40.4% of the orbits were found to be associated with at least one other orbit, and 29.8% with two or more. Numerous minor streams with high inclination and low eccentricity have been found at deep southern declinations from December to March, with little activity in this quarter during June and October. In addition to confirming several previously established cometary associations, a comprehensive search has indicated that 34 of the meteor associations may be related to 17 comets. Associations between several long-period comets and low-eccentricity high-inclination streams appear to be indisputable, and they confirm the origin of at least some of the 'toroidal group' meteors.
Elford Graham W.
Gartrell G.
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