(meteorobs) Possible outburst of beta-Perseids

[Roberto G.]

From: "Robert Lunsford" <lunro.imo.usa at cox.net>

> Quanzhi and All,
>
> Throughout the years many sub-radiants of the Perseids have often been 
> reported. One of the most common of these sub-radiants is the Beta 
> Perseids, which has a radiant in southern Perseus near the famous variable 
> star Algol (Beta Persei). Therefore the main difference between these 
> meteors and the normal Perseids is that they seem to line up with Algol, 
> rather than further north near the Double Cluster.
>
> I hope this helps!
>
> Bob Lunsford

If the radiant it's real we must remimder that probably this meteor
shower haven't the same origin of the Perseids (Swift-Tuttle)
but come from an other comet (unknown), casually in the same
period and position of Perseids: for this it shall be
very important determine the exact radiant and especially
the speed of the meteors for to can calculate their orbits.
We must reminder too that in this date (8 August)
the ordinary Perseids shall be actives, then perharps
the observers should observe a field with the center on the
radiant of Beta Perseid o between the two radiants for
to known  what are the Beta Perseids and
what are the ordinary Perseids.
If the Beta Perseids return we shall see this immediatly by
the big number of meteors, but it must be reminder too
that the biggest number ot they shall be not luminous.
It shall be too interesting known the sequence of magnitudes
(R value), the colours, the number of trail and if they have
outbursts.
Clear sky.
Roberto Gorelli


CUT

>> > Possible outburst of beta-Perseids
>> >
>> > Date: August 08, around 02:50 UT.
>> >
>> > In 1935, a large number of faint meteors were seen
>> > visually by S. Holm in Denmark. The meteors had
>> > short tracks and where mostly of +5 and +6 magnitude,
>> > with only 6-8 meteors brighter than +4 in each 5-minute
>> > count. Observing conditions must have been excellent
>> > and the magnitude distribution index steep. Raw counts
>> > by Holm peak at an amazing 548 meteors in a 5-minute
>> > interval centered at 23h15m MET. An observer 35 km
>> > from Silkeborg (at Brabrand, near Aaarhus) noted a
>> > large intensity of weak meteors at 23h MET, but not
>> > at all as many as reported by Holm.
>> >
>> > The dust trail responsible for this event, if it is real,
>> > would be very near Earth's path again on August 8,
>> > 2006. Meteors would radiate from R.A. = 52? Decl. = +40?
>> > Peak time would be around 02:50 UT. This event
>> > could be visible from western Europe and the eastern USA.
>> >
>> > If you are able to observe in the night of August 7/8,
>> > please look for faint meteors (binoculars?). The Moon
>> > should be out of the way in the final hour of the night.
>> >
>> > I would appreciate any reports on the level of activity,
>> > in 5-minute intervals, even if no beta-Perseids are seen.
>> >
>> > Peter Jenniskens
>> >
>> > The SETI Institute
>> >
>> > pjenniskens at ...

>