(meteorobs) IMO Shower Circ.: Draconids 2005

[Rainer Arlt]

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           I M O   S h o w e r   C i r c u l a r
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                  DRACONIDS 2005, visual

An outburst of Draconid activity was observed from
Asian and eastern European geographical longitudes
on October 8, 2005. The activity was also observed
by radar technique with highest rates at a solar
longitude of 195.44 (2005 October 8, 17h UT). With
a population index of r=3.0, an equivalent ZHR near 
150 was derived (Campbell-Brown et al., Univ. of
Western Ontario). Visual rates may be lower due to 
the different range of larger masses causing visual
meteors.

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Date (Oct)   Solarlong  nINT  nGIA   ZHR    +-
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06 19:20   193.5640      4     2     2.0   1.1   
07 16:00   194.4114      2     2     4.1   2.4   
07 18:50   194.5291      5     4     2.5   1.1   
08 14:10   195.3250      2     7    19.5   6.9   
08 16:10   195.4026      6    18    34.3   7.9   
08 18:30   195.5016     10    49    15.3   2.2   
08 19:50   195.5589      8     8     4.0   1.3   
08 21:50   195.6417      8     7     3.7   1.3   
09 07:10   196.0252      4     2     2.6   1.5   
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Solar longitudes refer to equinox J2000.0. ZHRs were
computed with a population index of 3.0 in accordance
with the radar ZHRs. No personal perception coefficients 
and no additional zenith correction apart from sin(hR) 
are applied.

We are greatful to the following observers sending in
their data quickly:

  Ricardas Balciunas (Lithuania), 
  Jiang Chang-gui (China), 
  Rong Chen (China), 
  Audrius Dubietis (Lithuania), 
  Bo Gao (China), 
  Yandong Hu (China), 
  Carl Johannink (Germany)
  Velislava Kiryakova (Bulgaria), 
  Jens Lacorne (France), 
  Ming-hui Liang (China), 
  Xuan Liu (China), 
  Jin Ma (China), 
  Veikko Makela (Finland), 
  Mikhail Maslov (Russia), 
  Alastair McBeath (UK), 
  Koen Miskotte (Netherlands), 
  Markku Nissinen (Finland), 
  Jurgen Rendtel (Germany), 
  Svetlana Slavova (Bulgaria), 
  Valentin Velkov (Bulgaria), 



Rainer Arlt, 2005 Oct 14
-- 
Visual Commission - International Meteor Organization -- www.imo.net
rarlt at aip.de --  phone: +49-331-7499-354  --  fax: +49-331-7499-526