"Heads up" on possible meteor activity.

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Wyvern
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"Heads up" on possible meteor activity.

Post by Wyvern »

May be of interest to the radio meteor observers here, but this "heads up" is taken from The Astronomers Telegram" service #14947. Although I don't intend dashing off to South America or the Antarctic, it'll be interesting to see if us north of the equator see any enhanced activity.

Regards to all,
Les

ATEL #14947 ATEL #14947

Title: Possibly Significant Meteor Activity From Very Young Dust Ejec From Comet 15P/Finlay
Author: Quanzhi Ye (UMd), Jeremie Vaubaillon (IMCCE/Observatoire de Paris/PSL, France), Mikiya Sato (NAOJ), Mikhail Maslov (Novosibirsk State Univ/Novosibirsk State Technical Univ)
Queries: [email protected]
Posted: 1 Oct 2021; 00:28 UT
Subjects:Optical, Comet, Meteor

Our independent calculations have predicted a possible new meteor activity originated from Jupiter-family comet 15P/Finlay. In particular, P/Finlay experienced two strong outbursts in its last apparition in 2014/15 (cf. Ye et al. 2015, ApJ 814, 79; Ishiguro et al. 2016, AJ 152, 169), of which the ejecta is predicted to come in the path of the Earth this year, hence significant meteor activity (with a small chance of reaching storm level) is possible. The predicted encounter with the 2014 ejecta is between approximately 2021 October 6, 2200 UT, and 2021 October 7, 0100 UT. The significant scatter in predicted peak times calculated by different researchers is likely due to the very shallow orbit of the stream with respect to the ecliptic plane. The radiant is located near RA=256 deg and Dec=-48 deg, favoring observers in South America and Antarctica.
The outburst is likely dominated by faint meteors around visual magnitude of +8; however, visual monitoring is still strongly encouraged as the technique is widely accessible and will examine a different size regime (close to cm-class meteoroids). Observations of this meteor shower will provide important constraints on the dust size distribution in the mm/cm-class regime of this very young dust ejecta and allow comparison with comet observations. Several other minor outbursts caused by the ejecta from earlier apparitions
of P/Finlay are also expected (<a href=”http://feraj.ru/Radiants/Predictions/19 ... ml”>Maslov,
unpublished</a>; Vaubaillon et al. 2020, JIMO 48, 29).


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Re: "Heads up" on possible meteor activity.

Post by Carbon60 »

Thanks for the heads up, Les. It will be interesting to see if we can detect any uptick in activity.

Stu.


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Re: "Heads up" on possible meteor activity.

Post by Montana »

Look forward to the data :)

Alexandra


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Re: "Heads up" on possible meteor activity.

Post by Carbon60 »

So....here are my data from the Arid meteor storm..... I think.

I say "I think" because the timing does not correspond with predictions (22:00 UT on 6th to 01:00 7th), but given that the rate before and after the event was typical (10-20 counts per hour) and on the expected day of the event the count shot up to 600+ counts per hour (between 16:00-17:00 UT) it seems too much of a coincidence. So either something screwy happened with my system, or the transmitter, or, more likely, the event was captured. I'd like to believe the latter :)
20211006_Arids.jpg
20211006_Arids.jpg (96.73 KiB) Viewed 1317 times
Event map (this is a record of every single meteor detection during the day)
20211006_Arids_Event Map.jpg
20211006_Arids_Event Map.jpg (107.52 KiB) Viewed 1316 times
Rainer/Les, do you have any data?

Stu.


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Re: "Heads up" on possible meteor activity.

Post by Montana »

Wow!! 600+ !!!!

Alexandra


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Re: "Heads up" on possible meteor activity.

Post by Carbon60 »

Hmmmm….it’s looking more and more like something spurious, which is a pity. I can’t find anyone else with the same/similar data. Typical for me that something odd happened exactly at the wrong time. :roll: :roll: :roll:

I’ll continue to look into it.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
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Re: "Heads up" on possible meteor activity.

Post by rsfoto »

Hi,

Just saw this message.

Looked at my friends and my result and nothing out of the world.

RMO_Zapata_202110.JPG
RMO_Zapata_202110.JPG (47.94 KiB) Viewed 1272 times
RMO_Ehlert_202110.JPG
RMO_Ehlert_202110.JPG (47.36 KiB) Viewed 1272 times

and a station in USA which I always take as reference

RMO_Nelson_202110.JPG
RMO_Nelson_202110.JPG (48.74 KiB) Viewed 1272 times


regards Rainer

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Re: "Heads up" on possible meteor activity.

Post by Carbon60 »

Thanks, Rainer.
Just goes to further strengthen the hypothesis that it was something more local (interference maybe) or equipment issues.

Oh well…..

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
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Re: "Heads up" on possible meteor activity.

Post by EGRAY_OBSERVATORY »

Now being called the ARID Meteor Shower, spaceweather.com of the 7th October'21 says :-

" POSSIBLE ANTARCTIC METEOR OUTBURST: The newly-discovered Arid meteor shower (described below) may have just produced an outburst over Antarctica. The University of Colorado Boulder operates a shortwave meteor radar at McMurdo Sound, and it detected a significant peak in meteor activity around 2300 UT on Oct. 6th. That matches the time Earth was expected to encounter a stream of debris from parent comet 15P/Finlay.

A NEW METEOR SHOWER: For thousands of years, Comet 15P/Finlay has been dive-bombing Earth's orbit, leaving trails of dust on our planet's doorstep, yet, strangely, there has never been a meteor shower. Until now. On Sept. 27th, Earth hit a stream of debris from Comet Finlay, and a meteor shower was born. " Includes more info and images...

Terry


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Re: "Heads up" on possible meteor activity.

Post by Wyvern »

Hi all,
Here's my heat map for the "alert period". Looking at the general rates, I really don't see anything significant. There's a hint of something in the early hours of the 3rd Oct, but nothing screams out at me. A look at the line graph doesn't help either. Given that the activity was predicted for South America/Antarctic, I guess the results simply confirm that "us Northerners" didn't see anything. Ce la vie!!
Les
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Meteors - 31 Sep to 08 Oct 2021.png
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Oct Meteors.png
Oct Meteors.png (53.8 KiB) Viewed 1254 times


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Re: "Heads up" on possible meteor activity.

Post by rsfoto »

Hi,

I found this and I do not know if this also applies for RMO observing eg. if it is visible better in the Southern hemisphere and therefore no detectable with RMO in the Northern hemisphere ...

:?

https://www.imo.net/a-possible-treat-fo ... observers/


regards Rainer

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Re: "Heads up" on possible meteor activity.

Post by rsfoto »

Hi,

This guy is in Brazil ...

Brazil_RMO_202110.JPG
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regards Rainer

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Re: "Heads up" on possible meteor activity.

Post by Carbon60 »

Thanks, Les and Rainer. It looks more and more likely that it was some sort of local effect. My equipment seems to be working fine and although there was a slight increase in geomagnetic activity (I checked my magnetometer data), there was nothing significant that would likely account for my spurious radio data. Given that no one else’s radio records from anywhere in the north showed anything remotely similar, then I’m alone on this one and at a loss to account for the events recorded at the time on my system.

I’ll recheck all my electrical connections…..

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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