Computer Science
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jimo...31...43d&link_type=abstract
WGN, Journal of the International Meteor Organization, vol. 31, no. 2, p. 43-48
Computer Science
10
Scientific paper
Owing to the common origin of the Orionid and eta-Aquarid meteor showers, these produce similar observational characteristics despite distinct intersection geometry. From the observational data of the Visual Meteor Data Base (VMDB), which represents a homogeneous dataset gathered by a standardized visual observing technique, long-term population index and activity profiles were derived. Typical ZHRs are in the range of 15-30 for the Orionids, and 40-80 for the eta-Aquarids. It was found that there exists a approx. 12-year periodicity of the Orionids and a certain correlation between the long-term activity profiles of both showers. The paper also gives some insight into the filamentary structure and variations of the population index of the Orionids recovered from visual observations, illustrating the complexity of the meteoroid stream.
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