Nanu!

Az utóbbi években kiderült, hogy szinte semmi sem úgy van az Aurigidák körül,
ahogy korábban gondoltuk... Alább bemásolom az IMO kalendáriumából a vonatkozó
szöveget, szerintem érződik belőle a tökéletes tanácstalanság. Minden
megfigyelés fontos lehet! Alfa Aurigida kitörést - ilyet látott Tepi 1986-ban
- az idénre nem jeleztek előre. (Szerintem ez vagy egy tök független, tényleg
csak a kitöréses években jelentkező raj, melynek semmi köze az Aur-Per
vidékről ősszel potyogtatott meteorokhoz, vagy évről évre nagyon változik az
itteni radiánsok aktivitása). Szóval misztikus.

Sry


Recent IMO analyses in HMO and VID have revealed a number of significant
problems with the parameters for the three supposedly established near-Auriga
showers active at times between late August and October, the α- (AUR) and
δ-Aurigids (DAU), and the September Perseids. For some time, these
essentially northern hemisphere showers have been suspected of simply being
(perhaps the more active) part of a series of poorly-observed sources with
radiants around Aries, Perseus, Cassiopeia and Auriga during the northern
early autumn. The main discrepancies to what was previously thought were as
follows. VID found the AUR active from August 30 to September 3, not August 25
to September 8, with a radiant at maximum around α = 68°, δ = +47°,
not α = 84°, δ = +42°. The radiant also showed a much smaller daily
drift, in a different direction, than currently assumed for the shower.

The SPE radiant at maximum, as noted in the table above, supposed to be near
α = 60°, δ = +47°, could not be located at all in the VID data.
Instead, a radiant active from September 5 to 13, located at α = 48°,
δ = +39° at its strongest on λˆ = 167° (2010 September 9) was
found, a location remarkably similar to that which produced an unexpected
outburst of comparablyswift, bright meteors on 2008 September 9 (whose radiant
was centred somewhere between α = 47 .°5 to 49°, δ = +38° to +43°
then). That source seemed to have been the formerly-littleknown ε-Perseid
minor shower (radiant around α = 50°, δ = +39°) – though its
radiant location is actually closer to β or ρ Persei than ε!

For the DAU, the HMO ZHR graph on p. 151 showed no peak at all. There was
marginally higher activity (ZHRs just ~ 2, even so) from λˆ ~ 176°
to 181°, not the previously-detected vague maximum around λˆ ~ 181°
to 191°. Worse still, the VID results were able to define DAU activity only
from October 6–12 (previously-assumed to last from September 18 to
October 10), with a loose peak at λˆ ~ 196° (2010 October 9), from a
radiant near α = 106°, δ = +46°, substantially southeast of the
expected one. Rather like the visual results, no clear activity profile was
definable in the video reports.

Consequently, although the previous parameters, with a few small amendments,
have been retained here, it is clear these showers need a thorough
re-examination, with fresh results to complement all the extant data, to help
determine exactly what is happening in this area of sky at this time. Visual
plotting has apparently struggled in the past, assuming the latest video
results can be relied upon, so imaging and telescopic data would seem to offer
the best hope of resolution. There is already the telescopic β-Cassiopeid
shower suspected of being active simultaneously to several of the September
Auriga-Perseus showers, for example. Unfortunately, any one year´s data cannot
be sufficient to cover everything that may be happening (aside from one-off
events like the occasional strong AUR outbursts, or the unexpected possible
ε-Perseid outburst in 2008), thus the better option would be to rely less
on trying to observe only the proposed maxima, and attempt to observe as
frequently as possible whenever the Moon and weather cooperate between the
last week of August and the first fortnight in October, remembering that all
the radiants in this area of sky are best-viewed only after about
23h–00h local time north of the equator.


> Jut eszembe, mit lehet tudni az AurigidĂĄkrĂłl?
>
> Elvileg jÜv�hÊtvÊgÊn, a maximumkor, mÊg lehet derßlt, Ês a
Hold is
> elvonul.
>
> snt
>
> 2010/8/27 Ben�
>
>>
>>
>> 2010/8/27 Berkó Ern�
>>
>> Ja, itt akkor elÊg felh� volt az Êg, De låtszik, hogy a
Denebt�
>>> indul, nagyjĂĄbĂłl a Vega-Altair kĂśzĂśtt fĂŠlĂşton megy ĂĄt, PER
>>> irĂĄnyĂşnak tĹąnt, de ugyebĂĄr azt mĂĄr a Metrec levette az aktuĂĄlisak
>>> kĂśzĂźl. NĂŠztem, hogy ĂĄtszerkesztem a Metrec.shw-t, Ăşgy mĂŠg
>>> nĂŠzi PER-ra, de nem talĂĄlta annak.
>>>
>>> Ez mĂĄr a Fujinon kisobival kĂŠszĂźlt az 1/3"-os KTC kamerĂĄval.
>>>
>>> �lókÊpem, meg animålt GIF-et is tettem fel róla.
>>>
>>> Tepi! Ha van mĂŠg mĂĄsik kamerĂĄkon is, azokat is tedd mĂĄr fel.
>>>
>>> Ern�
>>>
>>> ----- Original Message -----
>>> From: "Berkó Ern�quot;
>>> To: "�zlel�amat�csillagåszok fóruma"

>>> Sent: Friday, August 27, 2010 7:19 AM
>>> Subject: Re: [Leonidak] Ki lĂĄtta?
>>>
>>>
>>> �!
>>>
>>> Feltettem a HULUD/Fireballs/ kĂśnyvtĂĄrba. 1,5sec-os volt, 38 frame.
>>> Nålam zenitt� DK-re ment, vÊgig rajta van a kÊpen.
>>> ValĂłban 2sec eltĂŠrĂŠs van.
>>>
>>>  ErnĹ�
>>>
>>> ----- Original Message -----
>>> From: "Tepliczky IstvĂĄn"
>>> To: "�zlel�amat�csillagåszok fóruma"

>>> Sent: Thursday, August 26, 2010 10:45 PM
>>> Subject: [Leonidak] Ki lĂĄtta?
>>>
>>>
>>> Egy jó fÊlóråja, 22:09:15 NyISz-kor a jelenleg Bp-n ßzemel�Ês
>>> kĂśzel a
>>> zenit
>>> felÊ nÊz�HUMOB kamera egy jókora fÊnyessÊgŹ lassú tŹzgÜmbÜt
>>> fogott be,
>>> Ă­me:
>>>
>>> http://meteordata.galileowebcast.hu/video/HUMOB/Fireballs/HUMOB_20100826_200
>>> 915UT.jpg
>>>
>>> A 40 fokot kĂśzel 2 mp alatt tette meg, utĂĄna bĂşcsĂşt mondott az LM-nak,
>>> vaskos
>>> nyoma a videón is jól låtszik. Kelet fel� a zenit irånyåba
"hullott
>>> fel".
>>> Nem
>>> biztos, hogy az orszĂĄg kĂśzepĂŠn sokat lĂĄttĂĄk - hiszen ki nĂŠz a zenitre
>>> a
>>> teleholdas Êjszakåban -, de håtha "oldalról" is feltŹn�volt?
>>> VĂŠgignĂŠztem
>>> a
>>> tÜbbi online elÊrhet�videómeteoros kameråt, ebben az
id�ontban
>>> azonban
>>> egyik�ßk sem rÜgzített meteort.
>>>
>>> Tepi
>>>
>>>
>>> ________________________________________________________________________
>>> Leonidak levelez�ista -
�zlel�amat�csillagåszok fóruma
>>> HozzĂĄszĂłlĂĄsok: Leonidak@mcse.hu
>>> Listakezel�utasítåsok: Leonidak-request@mcse.hu
>>> ArchĂ­vum, beĂĄllĂ­tĂĄsok: http://mailman.mcse.hu/mailman/listinfo/leonidak
>>>
>>>
>>>  _____________ NOD32 5400 (20100826) InformĂĄciĂł _____________
>>>
>>> Az Ăźzenetet a NOD32 antivirus system megvizsgĂĄlta.
>>> http://www.nod32.hu
>>>
>>>
>>>
>>> ________________________________________________________________________
>>> Leonidak levelez�ista -
�zlel�amat�csillagåszok fóruma
>>> HozzĂĄszĂłlĂĄsok: Leonidak@mcse.hu
>>> Listakezel�utasítåsok: Leonidak-request@mcse.hu
>>> ArchĂ­vum, beĂĄllĂ­tĂĄsok: http://mailman.mcse.hu/mailman/listinfo/leonidak
>>>
>>
>> � tegnap Êpp a holdat figyeltem ebben az
id�ontban.�p a tåvcs�en
>> nĂŠztem
>> a låt�ez�en a vakító hold de így is låttam valami
villanĂĄst,
>> magasan a
>> felyem fĂślĂśtt, de mire fĂślnĂŠztem eltĹąnt, ezekszerint akkor ez volt az:)
>>
>> ________________________________________________________________________
>> Leonidak levelez�ista -
�zlel�amat�csillagåszok fóruma
>> HozzĂĄszĂłlĂĄsok: Leonidak@mcse.hu
>> Listakezel�utasítåsok: Leonidak-request@mcse.hu
>> ArchĂ­vum, beĂĄllĂ­tĂĄsok: http://mailman.mcse.hu/mailman/listinfo/leonidak
>>
> ________________________________________________________________________
> Leonidak levelezőlista - Észlelő amatőrcsillagászok fóruma
> Hozzászólások: Leonidak@mcse.hu
> Listakezelő utasítások: Leonidak-request@mcse.hu
> Archívum, beállítások: http://mailman.mcse.hu/mailman/listinfo/leonidak