(meteorobs) [IMO-Network] Draconid radiant position? [1 Attachment]

Rui Goncalves rui.goncalves at ipt.pt
Mon Oct 10 16:38:33 EDT 2011

Hi to all, Sirko,
my MetRec's radiant plot shows the same position as your plot.
Check the attach files.
By, Rui Goncalves

De: imo-network at yahoogroups.com em nome de sirko at molau.de
Enviada: seg 10-10-2011 21:01
Para: IMO-Network; IMO-News Mailing List
Cc: Meteorobs Mailing List
Assunto: [IMO-Network] Draconid radiant position? [1 Attachment]

<*>[Attachment(s) from sirko at molau.de included below]


upon analysing my Draconid observations I found a significant shift
between the expected and observed radiant position. The expected
position (according to the IMO Meteor Shower Calendar 2011) is

alpha = 262°, delta = 54°, v_inf = 20km/s

However, the radiant I get from 200 Draconids, recorded by AVIS2 between
18:15 and 21:15 UT, is

alpha = 277°, delta = 54°, v_inf = 20 km/s

That is, the deviation is exactly one hour in right ascension. Can that
be confirmed by other video observers?


PS: I determined the radiant position with the radfind tool
(radfind -sol 194 196 -iter -posdat -stepp 0.5 -stepv 1 -alpha 250 300
-delta 30 60 1008DATA.DBF dra.out)

*   Sirko Molau                 *                          *
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*   email: sirko at molau.de       *                          *
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<*>Attachment(s) from sirko at molau.de:

<*> 1 of 1 Photo(s) http://groups.yahoo.com/group/imo-network/attachments/folder/495545734/item/list
  <*> dra.gif


Please, upload your observation by anonymous ftp
(user: anonymous, pw: your mail address) to www.meteoros.de
directory /me/meteoros.de/incoming/<your_directory>
Compress your observations beforehand (preferably one ZIP
file per night) and send a short message to
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