Activity Profile of the Sextantid Meteor Shower

Details Activity Profile of the Sextantid Meteor Shower Activity Profile of the Sextantid Meteor Shower

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997em%26p...77...83o&link_type=abstract

Earth, Moon, and Planets, v. 77, Issue 2, p. 83-91 (1997).

Physics

4

Meteors: Individual (Sextantids), Radio Observations Of Meteors, Orbital Evolution

Scientific paper

The detailed activity profile of the Sextandids - one of the day-time meteor showers - is poorly known and still unclear. Using the forward-scatter radio technique we have successfully been able to obtain further detailed overall activity profile of the Sextantids for seven consecutive years: 1991-1997. Analysis confirmed the Sextantid activity duration in solar longitude (J2000) of at least 184-193 deg and the maximum solar longitude at 188.35 +/- 0.10 deg with a full width at half maximum (FWHM) of 2.0 +/- 0.2 deg. Performing the numerical integrations, we also substantiated a possibility of the association between Apollo-type asteroid (3200) Phaethon and the Sextantids. Furthermore, we roughly estimated relative maximum flux rate of Sextantids : Geminids as 1 : 3 amplitude ratio. Depending upon the flux rates and the time lags of the orbital evolution with Phaethon, we conclude that the Sextantids are at a more progressive stage of orbital evolution than the Geminids if both meteor streams are really associated with Phaethon.

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