(meteorobs) October Cameloprdalids coming
Jean-Louis.RAULT at fr.thalesgroup.com
Jean-Louis.RAULT at fr.thalesgroup.com
Wed Oct 10 04:30:05 EDT 2007
Hi all
Here near Paris, my "radio echoes counter" detected a peak around 9 UTC on
the 6th of october. See
http://radio.data.free.fr/main.php3#Jean-L._RAULT_F6AGR_1
My system is an automatic one, so a detailed manual analysis of the raw data
(echoes sorted by lenght and/or amplitude, for example) can be performed if
required.
Regards
Jean-L. Rault
> -----Message d'origine-----
> De : meteorobs-bounces at meteorobs.org
> [mailto:meteorobs-bounces at meteorobs.org]De la part de Esko Lyytinen
> Envoyé : vendredi 5 octobre 2007 15:33
> À : meteorobs at meteorobs.org
> Cc : pjenniskens at mail.arc.nasa.gov
> Objet : (meteorobs) October Cameloprdalids coming
>
>
>
> Hi,
>
> I remind you that next night, tomorrow Oct. 6. at about 7 or
> 8 UT there
> will be (at least expected) a brief shower of a few hours
> from the long
> period OCA's.
> The parent comet is not known.
>
> The radiant is at about 165, +79, so this favours Northern
> locations in
> the American continent.
> Vinf is at about 48km/s and the meteors are expected to be
> quite bright.
>
> The shower in 2005 was at first expected to be an outburst from the
> 1-rev trail, but now most probably (because for example observed in
> 2006) it was from what one may call filament, matherial
> probably mainly
> from a few revolutions back.
> There could be the possibility of a stronger
> surprise-outburts like the
> recent Aurigids, now even stronger, maybe .. the filament is stronger
> than with Aurigids.
> However I expect the probability of this to happen to be only
> 2 % ? If
> one would happen, the timing could differ several hours from
> the given
> filament timing.
>
> In radio meteor scatter data this is expected to give long overdense
> reflections but (depending on the equipment) may not increse
> the counts,
> possibly may even lower, because of more dead time from long
> reflections.
>
> Of the expected rates I can not say much more than, in 2005 Jarmo
> Moilanen captured in his fireball camera with about 90 degree
> horizontal view a 12 bright meteors.
> This shower was obseved last year but it was cloudy here in
> Finland an I
> do not have now any numbers here.
> Then, in my opinion this shower "was present" also in my
> radio data from
> some of the years before 2005, and it looks probably also in Jeff
> Brower's data.
>
> My own radio-equipment is expected to be ready to observe,
> but I myself
> will go (leave from here just at 7:30 UT) tomorrow to
> Artjärvi into the
> Ursa meteor-association meeting.
> Will have a look at the computer screen before leaving. Some amateurs
> are there already tomorrow and try to observe in the morning
> (if clear),
> several hours earlier if there might be some early OCA's.
>
> clear skies,
> Esko
>
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