SPA Meteor Section Results: July-September 2003

Details SPA Meteor Section Results: July-September 2003 SPA Meteor Section Results: July-September 2003

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jimo...33..151m&link_type=abstract

WGN, Journal of the International Meteor Organization, vol. 33, no. 6, p. 151-157

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Scientific paper

Information derived from reports, comments and data provided to the SPA Meteor Section from 2003 July to September is given, with some discussion. The Southern delta-Aquarids and alpha-Capricornids received excellent coverage in July and August, with maxima found around July 27-29 and July 31.5+-1.5 d, with ZHRs of appr. 12-18 and appr. 5+-1 respectively. Moonlight hindered observations near the Perseids' best, but coverage across the shower was splendid, and a maximum at August 13, 01h UT +- 0.5h, solar longitude (eq. 2000.0) = 139.85 deg +- 0.02 deg, was found, with a mean ZHR of 119+-12. This was around an hour later than several theoretical computations had suggested in advance. Some other possible Perseid maxima on August 13 were hinted at, but the poor conditions meant these could not be confirmed, and the radio observations were unable to find a clear single peak for the shower, although echo counts were highest from roughly 20h UT on August 12 to the same time on August 13. A very weak alpha-Aurigid return was found, with little sign of its predicted September 1 maximum. Three significant events attracted much attention later in September: a meteorite strike in New Orleans, USA, on September 23; images of a supposedly disintegrating meteorite over south Wales on September 24, which transpired to have been of Concorde's sunlit acceleration contrail off the south Welsh coast; and a substantial fall of meteorites over Orissa in eastern India on September 27. Little trace of any significant peak due to the Sextantids could be found in the late September radio results.

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