(meteorobs) Ursids 2014 outburst

[hvezdarna.kromeriz at post.cz]

Hi all,
i confirm this short outburst, we have some Ursids from video stations, but 
weather wasn´t good...from radio station we have this data:




max 23:28+-0:05 UT

FWHM 3:43+-0:10 h

HR 69+-9




Best regards

Jakub Koukal







---------- Původní zpráva ----------
Od: Mikhail Maslov <skjeller at yandex.ru>
Komu: Meteor science and meteor observing <meteorobs at meteorobs.org>
Datum: 25. 12. 2014 15:32:04
Předmět: Re: (meteorobs) Ursids 2014 outburst

"Hi all,

It seems that the encounter with 1405 trail has occured. It was predicted at
least by E. Lyytinen (23:38 UT) and me (23:54 UT), and timing of observed 
outburst suits quite well. Here you can see my prediction, but only in 
Russian - sorry, forgot to make English translation.
http://feraj.narod.ru/Radiants/Predictions/8p-ids2014.html

And here is fast translation of its part with figures, basing on Google 
translator:

---------------
In 2014 the Earth will pass near the trail of Comet 8P ejected in 1405 with 
the following collision parameters: minimum distance of 0.00069 AU, the 
ejection velocity of the particles is 22.87 m/s, the density of trail - 
117.2% of the density of the plume Leonid one treatment, the date and time 
of maximum are 22 January 23:54 UT.  Despite the high age of the trail, the 
encountering part has retained its regularity and a sufficiently high 
density. Negative factor is the fairly high ejection velocity of particles, 
this means that the this part of trail is saturated mainly with fine 
particles, giving faint meteors. Nevertheless, we can expect a noticeable 
spike activity Ursid around this time, with ZHR 10-15 in addition to the 
background activity.  Collision with this trail was also earlier indicated 
by Esko Lyytinen in [4]. His results are close enough to those obtained by 
the author - the minimum distance to 1405 trais, according to Lyytinen's 
calculations is 0.0007 AU, the time of maximum 22 December 23:38 UT, ZHR 
assessment is 10.
---------------


Thanks a lot to all observers who catched on outburst of this interesting 
shower.

Best regards,
Mikhail Maslov



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