(meteorobs) Explanation for 2013 eta-Aquariids high rates?
Mikhail Maslov
skjeller at yandex.ru
Mon Mar 17 06:13:11 EDT 2014
Hi all,
There was a forecast by Mikya Sato. He posted the info here just before
the ETA maximum, on May 04. Here is his message:
MS> Dear all,
MS> I am Mikiya Sato.
MS> I found out that the old dust trails of Eta Aquariids (ETA) will
MS> approach the earth in 2013.
MS> The outline is as follows.
MS> Trail Date(UT) S.Lon(deg) R(au) Ej.V(m/s) fM
MS> -910 May.06 05:45 45.682 -0.0018 -2.12 0.095
MS> -910 May.06 06:27 45.710 -0.0017 -2.11 0.017
MS> -1197 May.06 12:37 45.959 +0.0021 +3.44 0.013
MS> -1197 May.06 21:19 46.310 -0.0026 +3.43 0.012
MS> In addition, -1403, -1333, -1265, -1128, -985, and -835 trail
MS> also tend to approach the earth.
MS> The peak may be continuous or broader because distribution of
MS> the old dust has spread.
MS> But, the increase in the number of meteors is unknown about ETA.
MS> I expect that they are about 2 times of the usual activity at
MS> the maximum because this case is similar to Orionids from 2006 to 2010.
MS> Detection of the increase is not easy since observation condition
MS> of ETA is not so good in the Northern Hemisphere.
MS> However, please take notice of the appearance this year.
MS> Best regards,
MS> Mikiya Sato
MS> mail at kaicho.net
Best regards,
Mikhail Maslov
PJ> That's an excellent question, Karl. I have the very same one. I don't
PJ> know what the answer is and I will defer to the gurus on it, but I sure do
PJ> plan on being out there to see if there is indeed a repeat of last year's
PJ> amazing ETA performance! Could we be so lucky two years in a row??? I
PJ> sure do hope so...
PJ> Clear skies to all, Paul in north Florida
PJ> On Sun, Mar 16, 2014 at 5:07 PM, Karl Antier <karl.antier at laposte.net>wrote:
>> Hello meteor observers!
>>
>> I have a small question about the eta-Aquariids...
>> Last year the activity of this shower was unexpectedly far above the usual
>> rates, peaking to ZHRs around 120-130. was any research done to try to find
>> why such an increased of the general activity of the shower occured? Is it
>> also possible that 2014 eta-Aquariids rates could reach such values?
>>
>> Thanks in advance!
>> Clear skies to all!
>> Karl
>>
>> P.S. : dramatic colored fireball observed on March 13, 2014, 20h59 UT,
>> from a big part of France, Switzerland and Italy. It may hjave reached
>> magnitude -10 and was filmed by three cameras (2 italian and 1 French).
>> Videos and post (in French) can be seen at this page :
>> http://www.reforme-meteor.net/bolide-sud-est-de-la-france-13032014-20h59-tu/
>> _______________________________________________
>> meteorobs mailing list
>> meteorobs at meteorobs.org
>> http://lists.meteorobs.org/mailman/listinfo/meteorobs
>>
More information about the meteorobs
mailing list