Physics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000jimo...28..125m&link_type=abstract
WGN, Journal of the International Meteor Organization, vol. 28, no. 4, p. 125-130
Physics
3
Scientific paper
Summaries of news and results presented to the SPA Meteor Section from September and October 1999 are given. The delta-Auriginids were moderately well observed in mid-September, but no clear maximum was apparent in either the visual or radio data. A possible new minor radio echo-count spike was found in European data around (eq. J2000) lambda= 174 (September 17), which may be related to one found at (eq. 1950.0) lambda= 172.91 in 1989 [1]. The most notable feature of September was a strong radio meteor maximum around lambda=186 (September 30), most probably due to a good Sextantid return. October 9, 9h - 12h UT (lambda= 195.631-195.755) produced an unexpected visual-radio Draconid outburst over Japan, with ZHRs around 10-20. Some European radio observations provided confirmation, but visual reports of weak Draconid activity over Japan and Europe on October 8-9 were inconclusive. The lead-up to the Orionid maximum was quite well-seen visually and by radio, with a maximum on October 21-22 in the radio profile much as expected. No pre-peak enhancement was seen on October 17-18 this year. Radio results showed minor enhancements in late October around lambda= 215 and lambda= 217, but these were not as marked as in 1998 during the Taurid activity then.
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