(meteorobs) f-Herculids

[Esko Lyytinen]

Hi all,

In the night Feb 27/28 we had some meteos with back-traces crossing at 
around 272, +39.
The IAU Meteor Data Center gives the radiant of FHE as 268, +41 , that 
are quite neaby.
http://www.astro.amu.edu.pl/~jopek/MDC2007/Roje/pojedynczy_obiekt.php?kodstrumienia=345&colecimy=0

You can see the BTrail image of our data of the night at:
http://www.lyytinen.name/esko/BT20110227.png
The backtraces of the meteors in quesion cross (as blue or light blue) 
"below" Wega at left from center.
One of them, a litte aside, crossing as blue at 269, +33 is a double 
station meteor, possibly belonging with the others or possbly not.
The Vinf of this was 47 km/s ( Vg 45.6 km/s )
In the colouring, the change from blue to light blue is expected at 
(Vinf) 41 km/s (bigger at blue), but there is of course some scatter in 
this.

The data is collected from the Finnish fireball-group stations, and all 
the meteors in question happen to be from Ilkka Yrjölä's camera and the 
double station meteor also from Ari Jokinen. Ilkka Yrjölä gets more dim 
meteors than others of us. The others are more concentrated to fireballs.
Because practically only Ilkka captured these, the meteors were probably 
not so bright.

Regards,
Esko

> From: Sergei Schmalz<sergiuspro at yahoo.de>
> Subject: (meteorobs) f-Herculids
> To: Global Meteor Observing Forum<meteorobs at meteorobs.org>
> Message-ID:<533515.26943.qm at web29018.mail.ird.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Good morning, all!
>
> In WGN 37:3 (2009) Sirko Molau and Javor Kac described a new possible meteor shower of f-Herculids (FHE) active from 1st to 9th of March, with an extremely weak maximum at 346? solar longitude (corresponds to approx. 3:00UT 2011-03-07) and having entry velocity at 44 km/s.
>
> I've been out on visual observations for four nights, on the 1st, 3rd, 5th and 7th of March with observation Teff 2, 2, 2.5 and 2.5 hours accordingly. Except for the 5th I saw one possible FHE each night. The last one on the 7th was even a radiant-close one.
>
> So, I am wondering if anyone else has been observing last days and can comment on the activity of f-Herculids?
>
> With best regards
> Sergei Schmalz
> (Wiesbaden, Germany)
>
>
>
>