Projects / meetings
Meteor Section Autumn Meeting 2010
Meteor Section Autumn Meeting was held 15.10.2010 - 17.10.2010 at Artjärvi Observatory.
Meteor Section attended Cygnus 2010 summer camp
Meteor Section meeting was held at Cygnus 2010 summer camp in Ilmajoki saturday 17.7.2010 at 16-16.30.
Meteor Section Lecture in Mikkeli 17 April 2010
Meteor Section will give lecture of meteor stream Gamma Ursae Minorids in Mikkeli
"Star Days 2010" 17 April 2010.
Meteor Section Autumn Meeting 2009
Meteor Section Autumn Meeting will be held 16.10.2009 - 18.10.2009 at Artjärvi Observatory.
Meteor Section attended Cygnus 2009 summer camp
Meteor Section attended Cygnus 2009 summer camp in Utsjoki.
Section told about meteorites from 2008 TC3 meteoroid.
Meteor Section Autumn Meeting 2008
Meteor Section Autumn Meeting will be held 17.10.2008 - 19.10.2008 at Artjärvi Observatory.
Meteor Section attended Cygnus 2008 summer camp
Meteor Section attended Cygnus 2008 summer camp in Varkaus.
Section meeting was friday 18 July 2008.
Meteor Section Autumn Meeting 2007
Meteor Section Autumn Meeting was held 6.10.2007 - 7.10.2007 at Artjärvi Observatory.
Meteor Section attended Cygnus 2007 summer camp
Meteor Section attended Cygnus 2007 summer camp.
Section meeting was held friday 27 July 2007.
Meteor Section Autumn Meeting 2006
Meteor Section Autumn Meeting was held 7.10.2006 - 8.10.2006 at Artjärvi Observatory.
Picture of participants at small resolution (256 k)
Meteor Section attended Cygnus 2006 summer camp
Meteor Section attended Cygnus 2006 summer camp.
Section meeting and public lecture was held saturday 5th August 2006.
In section meeting we
discussed about observations and plans. New observation guide was presented and discussed.
We talked about video meteor observation network and discussed about WGN-article (WGN 34:2 April 2006):
"Multiple station meteor observations: an international
program for studying minor showers exploring IMO potentiality" by
Josep M. Trigo-Rodriguez, Jeremie Vaubaillon, Esko Lyytinen and Markku Nissinen.
We discussed about web-fireball forms also. New Meteor Section Autumn meeting
time was decided in the Section Meeting, new time is 7 Oct - 8 Oct 2006. Autumn
Meeting will be held at Artjärvi Observatory. Also satellites and rocket-phenomena
section will keep the meeting in the same time, so the meeting will be common between
two sections. We decided that new observing guide will be presented in the Autumn Meeting
if it is ready then.
Public lecture: "Video observations of minor streams". Lecture was kept by Markku Nissinen
and Marko Toivonen.
More information of summer camp is found at Cygnus 2006 homepage:
Meteor Section Autumn Meeting 2005
Meteor Section's Autumn Meeting was held at Artjärvi Observatory 8.- 9.Oct.2005.
Picture of participants at small resolution (176 k)
Picture of participants at higher resolution (980 k)
Meteor Section's program in Cygnus 2005 summer camp
Annual summer camp Cygnus was held year 2005 in Lapua. Meteor Section's meeting
was at friday 22.7.2005 at 14.00 - 14.45. Right after the meeting 14.45 - 15.30 there was
presentation of Meteor Year 2005 highlights and observations and predictions for
meteor streams of year 2005.
predictions for year 2004
Meteor Section Autumn Meeting 2004
Meteor Section's Autumn Meeting was held at Artjärvi Observatory 9.- 10.Oct.2004.
Many thanks for the participants of the Meeting.
predictions for year 2003
Meteor Section Autumn Meeting 2003
Meteor Section's Autumn Meeting was held at Verla 18.10.- 19.10.2003. Many thanks
for people who participated the meeting.
We submitted following information to meteorobs, IMO-news and Ursa Meteor Section
We have searched for possible encounters, this December, with old Ursids
trails left from the parent comet 8P/Tuttle.
The most promising trail appears to be the very old trail from the year
This trails is of course very strongly disrupted. According to the
modelling, meteoroids from this trails seem to have some clustering near
the Earth orbit at the correct time this December. Possible encounter
can be at two completely different sections of the trail, these making
further 'foldings'. Especially the one with larger da0, seems to consist
of a wide range of da0:s (could be divided further to at least three
Using the solar radiation pressure to cause the da0 in the modelling,
the encountering sections correspond the beta values of about 0.00041 or
0.00042 and 0.00059 to 0.00070
The smaller beta value has the most close encounter in the nominal
solution A2=0, but this situation is preserved only with quite a small
range of the A2-values near zero. At the higher beta values, it is the
"A2-effect", (negative values) that seems to bring the particles more
close to the Earth orbit.
The encounter with the smaller da0 is predicted at solar longitude
270.71 or 270.72 and the other at solar longitude 270.76 to 270.82. The
former is expected to contain brighter meteors. The peaks are expected
to merge into each other with a more or less gradual dimming of the
We can't give any ZHR value and not even tell which one of the trail
sections will give the higher ZHR. The parent comet early motion
uncertainties grow quickly when we compare for example the returns
around 1100 to those near 1400.
We can not be even certain of any apparent trail encounter, but do
expect that the encounters are strong enough to be detected and give ZHR
above the background. In 2000 the beta value was about 0.0011, so the
meteors are now expected to be generally brighter. Because of the full
moon this is an important factor.
The times are:
2002,12,22.79 or about 19:00UT, for the first section encounter
2002,12,22.86 or about 20:40UT, for the second section encounter
9 December 2002
Ursids 2002 News from Finnish Meteor Section page.
Leonid project 2002
Meteor Section Autumn Meeting 28.9.2002 - 29.9.2002
Meteor Section's Autumn Meeting was held on Verla near Kuusankoski on 28.9 - 29.9.2002. Many thanks to
people, who participated the meeting!
Leonid project 2001
Meteor Section participated to "Avaruus 2001" exhibition
Meteor Section was telling about its activities in Ursa Astronomical Association's exhibition section in
"Avaruus 2001" exhibition, which was held in Helsinki on 3.11.2001. Thanks to everyone, who attended!
Meteor Section Autumn Meeting 22.9 / 23.9.2001
Meteor Section's Autumn meeting was held on 22.9.2001 (saturday) - 23.9.2001 (sunday) on Verla (30 km
north of Kuusankoski). Meeting started at 14:00 on saturday and ended on 12:00 on sunday. Many thanks
for people who participated to the meeting.
Meteor Section's Meeting in Cygnus 2001 summer camp
This year Cygnus 2001 summer camp was held in Räyskälä. Meteor Section had section meeting
in 3rd August 2001 at 15:30 - 16:15. We discussed about last observing seasons results and planned
activities for next observing season. We talked about leonid predictions for this year and trained
observers to make plotting observations of meteors (plotting observations project during Cygnus camp).
Leonid project 2000
Many Finnish observers observed here in Finland and Mr. Janne Pyykkö
observed in Florida. The weather was reasonable good here this year. We updated
our mailing list firstname.lastname@example.org with latest information and transferred weather
observations between observers to get more observers to good observing places.
Esko Lyytinen and Ilkka Yrjölä made radio-observations.
Observers who sent reports to Meteor Section during the Leonids 2000: Ilkka Yrjölä,
Esko Lyytinen, Janne Pyykkö, Veikko Mäkelä, Kukka Viitala, Jani Katava,
Timo Leponiemi, Markku Nissinen, Marko Toivonen, Jorma Koski and Jarmo Moilanen.
Meteor Section's Meeting in Kuvansi 2000 in October
Section Meeting took place in the beginning of october in Kuvansi 6.10 - 8.10.2000.
Meteor Section's Program in Cygnus 2000 summer camp in Porvoo
This year Meteor Section's program in Cygnus was more interesting than
ever before. We organized with aurora section radio workshop in which we
observed simultaneously aurora and meteor activities with two radios. People
who organized the workshop are Jani Katava, Ilkka Yrjölä and Markku Nissinen.
We had meteor scientist Esko Lyytinen telling us about leonid and other meteor
streams prediction methods. His presentation was very well done, many thanks to
him. We had also traditional section meeting in saturday.
Meteor Section's Leonid project '99
Section leaders observed this year from Finland according to our plans.
Latest information is available from meteor section. In Finland our goal
was to get good visual observation data and also good radio data and possibly video
observations also (Ilkka Yrjölä's video system). Photographic observations were
of course also planned. That is what happened: Night before maximum was good,
in fact excellent, but only few leonids were observed visually (of course
because peak was to be sharp). Maximum noght was cloudy with snowing, only few
meteors were seen through clouds, maximum was detected in some areas where
cloud cover was thinnest. So the maximum occured all right, there is probably enough data
in other media so I am not going into details about ZHR observed visuallyl or
other details. So, lucky you who were under clear skies on 17/18 !!!
Meteor section meeting in Cygnus '99
Meteor section had the meeting also in this year Cygnus. In addition to traditional meeting
we had also workshop program. In meeting we discussed about last years leonid project and
this year plans. New limiting magnitude determination areas from IMO were introduced in
the meeting. In workshop we analysed video observations and radio observations from Mr. Ilkka Yrjölä
and discussed about observation methods.
Leonid project in november 1998
We made the observing trip to China to good observing location in november.
We left Helsinki 12.11 to Peking and came back 20.11. We observed in the
great wall about 120 km northeast of Peking. Weather was good, Lm was about 6.0.
We made over 7 hours of visual meteor observations in the maximum night (17/18.11).
Unfortunately supermaximum did not materialize, activity was around ZHR 150. Observations to meteor
section from leonids sent: Teemu Öhman, Timo Kinnunen, Ilkka Yrjölä, Vesa Törnqvist and
Markku Siljama. Janne Pyykkö observed leonids in Thailand. Veikko Mäkelä collected weather
data during leonids (see Ursa Minor 6/98). Many thanks to all!
Sauna party 1998
The traditional Sauna party took place also in last year. It was
held in 8/9.10, the draconid maximum night. We gathered in Kuvansi,
Ilkka Yrjölä, Marko Toivonen, Jani Katava and Markku Nissinen.
Ilkka had his video camera system with him. Sky was partly cloudy,
but we were to observe all right. The maximum occured 8/9.10 at 13:00 GMT
and ZHR was well over 100. Unfortunately it was daytime in Finland.
In the night draconid activity was a little over normal level,
but not anymore near outburst levels.
Meteor section meeting in Cygnus '98
Meteor section had the meeting in last year Cygnus. We discussed
about last and this year (1999) leonid otburst possibilities and possible
draconid outburst last year among other things. Ilkka Yrjölä
presented recording device, which records timesignal to cassette.
He has developed that himself. He also showed us his video camera
system, which was magnificient. Meeting gathered a lot of people.
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