(meteorobs) Draconid radiant position?

Berkó Erno berko at is.hu
Mon Oct 10 16:13:50 EDT 2011


Hi Sirko,

I also observed this. I attached the HULUD1 tracing plot (all meteors).

Regards,

Erno Berko, Hungary

----- Original Message ----- 
From: <sirko at molau.de>
To: "IMO-Network" <imo-network at yahoogroups.com>; "IMO-News Mailing List" 
<imo-news at yahoogroups.com>
Cc: "Meteorobs Mailing List" <meteorobs at meteorobs.org>
Sent: Monday, October 10, 2011 10:01 PM
Subject: (meteorobs) Draconid radiant position?


> Folks,
>
> 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?
>
> Best,
> Sirko
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