(meteorobs) Unusual Eta Taurid (ETT) Activity?
Robert Lunsford
lunro.imo.usa at cox.net
Thu Oct 22 17:33:18 EDT 2015
Bruce and All,
Actually the two radiants are over an hour apart in RA and 7 degrees in declination. An experience observer facing toward this area of the sky should have no trouble separating these meteors. The velocity for the ETT's would be at least 15km/sec faster than what George reported so I believe these two radiants are different.
George's RA of 2.3 was not clear to me. I took it to be 2.3 hours which would correspond to 2:18. The position of the Southern Taurids on that night was 2:40 +12. This is only 4 degrees from George's position of 2:18 +15. If I was out that night I would have called these meteors Southern Taurids.
Examining the IMO video data for 10/21, I found a weak STA subradiant located at 2:12 +17, which is very close to George's reported position. Perhaps this subradiant was extraordinarily active this night?
Robert Lunsford
---- Bruce McCurdy <bmccurdy at shaw.ca> wrote:
> Any possibility these Eta Taurids correspond to the Autumn Arietids reported
> by George? The radiants are not that far apart.
>
> Bruce
> *****
>
> -----Original Message-----
> From: meteorobs-bounces at meteorobs.org
> [mailto:meteorobs-bounces at meteorobs.org] On Behalf Of Robert Lunsford
> Sent: Wednesday, October 21, 2015 5:59 PM
> To: Meteor science and meteor observing
> Subject: Re: (meteorobs) Unusual Eta Taurid (ETT) Activity?
>
> Paul and All,
>
> I just received observations from Oct, 21 by veteran observer Terrence Ross
> who indicated he counted 9 Eta Taurids during 4 hours of viewing. This is
> not as strong as the rates you observed but indicates the source is still
> active. I believe these meteors have always been there this time of year but
> were called sporadics as no one knew of this radiant until recently. It will
> be interesting to continue to monitor this source from year to year to see
> if the activity continues.
>
> Robert Lunsford
>
>
> ---- Paul Zeller <pzeller1966 at gmail.com> wrote:
> > Hello all. I had a couple of hours of predawn observing this morning
> > (Sunday Oct. 18) from my back yard with very clear skies (LM = 5.2).
> > Though I was primarily looking for Orionid activity, and saw a few,
> > what really got my attention was that from 7:30 - 8:30 UT I saw four
> > meteors that seemed to be members of the Eta Taurids. Three appeared
> > within the same ten minute time span. They seemed to be the right
> > speed and could be traced back to the area shown as the radiant on
> > Robert Lunsford's latest Meteor Activity Outlook article. The shower
> > description seemed to indicate that only one or less should be seen
> > and that maximum activity is still six nights away. Has anyone else
> > noticed an unusually high number of these meteors from this shower?
> >
> > Paul Zeller
> > Indianapolis, IN, USA
>
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