Results of the IMO Video Meteor Network - September 2009
========================================================
Before we concentrate on the September results, let's first have another
look back at the August data. Because of a storage quota at our ftp server,
a few data from STG38 got lost, and the observations of REMO1 and REMO2 were
incomplete when the last report was written. After these data were added,
we reached a total of more than 4,400 hours of effective observing time and
30,000 meteors.
September was a pleasant month as well, that presented many observing nights
to the observers. Around mid-September there was briefly rainy weather, but
before and thereafter we had clear skies at most observing sites. So more
than half of all cameras collected more that 100 hours of effective observing
time in 20 or more nights. We could not reach the August totals, but with
over 4,000 hours it was by far the second best month of the camera network.
The average number of meteors per hours was cut half compared to August.
Still, 15,000 meteors in total is the third best monthly result and naturally
far more than we ever recorded in a September.
By the end of the third quarter 2009 we have collected already as many
observing hours and meteors as in all of 2008, and we also passed the limit
of half a million meteors in the IMO Video Meteor Database.
There are several minor meteor showers in September - some of these
originating from the Perseus Auriga region (with the Aurigids and the
September epsilon-Perseids as most prominent representatives). The southern
Taurids are also noticeable. Still, we want to analyse two other shower in
more detail this month.
The Nu-Eridanids have the number 337 and a "working status" in the MDC list.
In our most recent analysis, we detected this shower between September 3
and 24 with overall 1,185 meteors. During the full activity interval it
showed an almost constant video rate of three to four with a minor peak on
September 7. The second shower, dubbed September iota-Cassiopeids, was newly
detected by us based on 278 shower members. It got number 416 on the MDC list
and showed also an almost constant video rate with a peak of nearly 1 on
September 11.
Could these two shower be detected in September 2009 as well? To answer this
question, the meteor shower assignment was first recomputed based on the
shower parameters obtained by us. Then, the number of shower meteors per
night was summed over all cameras, and divided by the number of Sporadics
to account for the variable observing time and conditions. Nights with less
than 200 sporadic meteors were omitted.
Between September 4 and 25, we recorded 611 NUE beside 7,849 sporadic meteors.
Between September 6 and 16 it was 80 SIC beside 2,707 Sporadics. Figure 1
shows the ratio between NUE/SIC and SPO per night. The profiles fit well to
the results published in WGN, given that we are talking about very weak
showers here. The Nu-Eridanids show an almost constant rate of nearly 10% of
the sporadic counts. For comparison: that's about the number of southern
Taurids in end-September. The September iota-Cassiopeids show a steep rise
between September 6 and 8, reaching 5% of the sporadic count at maximum.
Thereafter, the activity slowly falls until September 16. Hence, both showers
could be detected in the 2009 data set as well.
Figure 1: Activity profile of the Nu-Eridanids and September iota-Cassiopeids
in September 2009.
1. Observers
============
Code Name Place Camera FOV LM Nights Time Meteors
--------------------------------------------------------------------------------
BENOR Benitez-S. Las Palmas TIMES4 (1.4/50) 20 dg 3 mag 3 16.6 h 39
TIMES5 (0.95/50) 10 dg 3 mag 9 38.0 h 60
BRIBE Brinkmann Herne HERMINE (0.8/6) 55 dg 3 mag 24 126.3 h 514
CASFL Castellani Monte Baldo BMH1 (0.8/6) 55 dg 3 mag 20 81.8 h 198
BMH2 (0.8/6) 55 dg 3 mag 18 83.1 h 280
CRIST Crivello Valbrevenna C3P8 (0.8/3.8) 80 dg 3 mag 27 165.6 h 703
STG38 (0.8/3.8) 80 dg 3 mag 22 112.6 h 299
ELTMA Eltri Venezia MET38 (0.8/3.8) 80 dg 3 mag 17 111.1 h 365
GONRU Goncalves Tomar TEMPLAR1 (0.8/6) 55 dg 3 mag 25 179.7 h 810
TEMPLAR2 (0.8/6) 55 dg 3 mag 24 142.1 h 421
GOVMI Govedic Sredisce ORION2 (0.8/8) 42 dg 4 mag 22 138.5 h 485
HERCA Hergenroth. Tucson SALSA (1.2/4) 80 dg 3 mag 27 122.4 h 202
SALSA2 (1.2/4) 80 dg 3 mag 26 166.5 h 434
HINWO Hinz Brannenburg AKM2 (0.85/25) 32 dg 6 mag 18 87.5 h 287
IGAAN Igaz Hodmezozovas. HUHOD (0.8/3.8) 80 dg 3 mag 25 173.4 h 590
JOBKL Jobse Oostkapelle BETSY2 (1.2/85) 25 dg 7 mag 11 76.7 h 683
KACJA Kac Kostanjevec METKA (0.8/8) 42 dg 4 mag 17 82.7 h 176
Ljubljana ORION1 (0.8/8) 42 dg 4 mag 22 84.5 h 241
Kamnik REZIKA (0.8/6) 55 dg 3 mag 2 5.0 h 9
STEFKA (0.8/3.8) 80 dg 3 mag 3 12.0 h 26
KOSDE Koschny Noordwijkerh. TEC1 (1.4/12) 30 dg 4 mag 17 63.7 h 132
LUNRO Lunsford Chula Vista BOCAM (1.4/50) 60 dg 6 mag 23 139.3 h 564
MOLSI Molau Seysdorf AVIS2 (1.4/50) 60 dg 6 mag 21 136.9 h 1508
MINCAM1 (0.8/8) 42 dg 4 mag 25 124.8 h 383
Ketzuer REMO1 (0.8/3.8) 80 dg 3 mag 25 142.5 h 434
REMO2 (0.8/3.8) 80 dg 3 mag 28 157.3 h 780
OCHPA Ochner Albiano ALBIANO (1.2/4.5) 68 dg 3 mag 22 115.4 h 341
SCHHA Schremmer Niederkr. DORAEMON (0.8/3.8)80 dg 3 mag 20 103.1 h 256
SLAST Slavec Ljubljana KAYAK1 (1.8/28) 50 dg 4 mag 16 58.1 h 112
STOEN Stomeo Scorze MIN38 (0.8/3.8) 80 dg 3 mag 25 188.9 h 947
NOA38 (0.8/3.8) 80 dg 3 mag 25 155.6 h 565
SCO38 (0.8/3.8) 80 dg 3 mag 25 182.0 h 951
STRJO Strunk Herford MINCAM2 (0.8/6) 55 dg 3 mag 21 68.7 h 202
MINCAM3 (0.8/8) 42 dg 4 mag 17 89.8 h 382
MINCAM5 (0.8/6) 55 dg 3 mag 16 72.5 h 214
TEPIS Tepliczky Budapest HUMOB (0.8/3.8) 80 dg 3 mag 17 114.9 h 269
YRJIL Yrjola Kuusankoski FINEXCAM (0.8/6) 55 dg 3 mag 26 140.3 h 579
--------------------------------------------------------------------------------
Overall 30 4049.9 h 15441
2. Observing Times (h)
======================
Sep 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BENOR - - - - - - - - - - - - - - -
- - - - - - - - - - - - 5.7 4.3 6.0
BRIBE 6.3 1.9 1.1 0.3 2.3 1.1 7.5 9.8 - 5.6 0.9 5.8 3.8 - -
CASFL 5.3 0.3 - 1.2 - 7.7 4.2 - - 1.6 0.2 1.5 - 0.2 -
5.4 2.4 1.8 - 9.1 7.2 6.0 - - 3.8 1.4 2.0 - 0.2 -
CRIST 7.5 0.5 2.3 6.5 9.2 8.3 6.9 9.3 7.9 4.3 5.0 9.6 1.4 1.0 -
8.3 5.0 1.9 7.1 6.1 6.2 9.3 8.4 9.4 6.3 7.4 8.5 3.3 1.8 -
ELTMA 7.6 - - 8.7 7.0 7.8 6.7 - - 8.2 2.3 8.3 - - -
GONRU 9.1 2.6 8.0 7.2 9.4 6.4 8.4 6.5 - 3.9 7.6 - 6.0 6.5 9.7
4.4 0.9 5.0 4.7 6.4 7.9 7.0 5.5 - 1.4 5.7 - 4.8 5.5 7.8
GOVMI 7.3 - - - 7.8 7.0 6.8 - 5.0 - 6.0 4.0 - 7.1 7.0
HERCA 6.3 3.4 3.5 0.8 - - - 4.8 - - - - - - -
- 5.3 5.9 0.8 - - - 6.8 - - - - - - -
HINWO 4.8 - - - 5.0 6.6 5.0 - 5.4 - - 5.6 - 5.1 3.5
IGAAN 7.0 4.8 3.8 - 3.5 8.0 7.7 7.7 3.5 - 7.0 7.2 5.0 4.0 -
JOBKL - 4.6 5.8 3.9 5.2 3.6 - 6.2 6.2 - 6.3 4.1 6.5 6.5 6.7
KACJA 7.4 6.6 - - 2.8 4.0 3.7 2.4 - - - 7.3 - 6.9 7.2
4.4 6.3 - 2.6 7.6 7.6 7.7 2.7 6.6 - 6.3 2.4 - 6.5 8.0
- 4.4 - - 4.4 4.3 - - - - 5.7 - - - -
- - - - 6.6 4.6 - 1.1 - - 5.7 - - - 7.7
KOSDE - - - - - - - - - - 4.1 2.8 - - -
- 2.8 4.9 - 5.1 3.4 - 4.6 5.8 - 3.2 - - - -
LUNRO 4.0 1.9 2.0 - - 7.3 - 8.4 3.1 - - 4.0 - - -
MOLSI 4.4 4.7 - 4.6 1.0 - - 1.4 - - 1.1 0.1 - 4.6 5.8
2.6 6.0 - 3.3 6.2 6.3 6.6 1.4 4.4 2.2 1.0 4.9 0.3 5.7 7.8
6.2 - 6.3 - 6.3 6.4 4.4 5.1 4.6 - 1.8 3.5 7.0 5.7 7.1
4.6 - 6.3 6.3 6.3 6.4 4.4 6.6 4.6 0.3 1.8 3.4 7.1 6.6 7.1
OCHPA 8.1 2.5 - 8.2 8.2 1.6 1.6 0.6 1.7 3.9 8.2 7.5 2.1 4.9 1.2
SCHHA 0.9 4.0 6.7 6.4 5.9 7.1 - 3.0 - - 5.6 1.6 - 8.1 5.2
SLAST 2.0 - - - - - - - 1.7 - 3.2 - - - 7.3
STOEN 7.2 7.2 - 6.5 5.8 5.3 1.5 2.2 7.6 4.5 7.6 7.4 - 7.3 7.9
7.2 7.2 - 7.3 5.8 5.0 0.5 1.2 7.6 4.0 7.7 7.4 - 7.4 7.9
7.2 7.2 - 7.3 5.2 5.4 0.5 1.6 7.1 5.1 7.6 7.3 - 7.3 7.9
STORO - - - - - - - - - - - - - - -
STRJO 2.3 - 1.0 3.3 6.1 4.1 2.8 - 0.5 - 1.0 3.3 6.6 4.4 6.8
- - 5.7 4.9 6.0 5.7 2.3 - - - - 3.4 5.5 4.2 5.8
4.9 - 5.6 5.8 4.9 3.7 3.3 - - - 1.7 2.7 5.7 5.1 6.1
TEPIS 3.2 - - - - - - - - - 4.4 - - - -
YRJIL - - - - 3.1 2.1 2.7 1.7 3.9 3.9 4.2 1.0 4.5 4.1 4.8
--------------------------------------------------------------------------------
Sum 133.8103.8 85.4 92.9147.9137.9 70.7 81.8 95.6 53.2151.6144.8 79.4151.9172.7
Sep 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-------------------------------------------------------------------------------------
BENOR 2.0 1.0 1.0 - - - 0.8 - - - - - - - - -
BRIBE 6.4 8.3 8.4 6.3 0.3 4.5 7.5 7.7 2.4 4.8 8.9 4.8 6.1 6.3 9.2 8.2
CASFL - 7.0 5.1 6.1 - 6.3 5.2 - 5.9 5.5 4.0 8.3 7.6 - 6.8 8.8
- 7.2 5.4 5.1 - 6.3 3.8 2.9 8.4 3.7 3.2 8.3 5.6 - 8.8 7.3
CRIST 8.1 8.2 8.2 7.3 7.2 6.8 3.2 7.4 6.4 6.0 8.6 8.7 4.0 6.3 8.0 8.8
- - 8.3 6.2 7.3 8.4 2.9 8.5 7.1 6.5 8.7 8.7 7.7 6.1 8.9 8.9
ELTMA 6.6 7.9 - 7.8 8.2 6.3 3.0 4.2 7.3 7.3 4.9 7.8 - - 7.4 8.6
GONRU 7.5 8.6 8.5 7.1 8.5 8.6 7.1 5.7 4.7 8.8 4.8 3.1 9.0 8.9 9.0 7.4
7.4 8.6 8.6 6.2 8.5 8.8 - 6.7 4.7 8.8 - 1.8 9.0 8.9 9.0 4.0
GOVMI 8.4 7.2 7.2 4.5 7.3 5.1 1.9 4.8 8.8 8.9 6.9 6.4 2.4 - 7.5 8.7
HERCA - - - - - - - - - - - - 1.4 5.8 3.5 3.1
- - - - - - - - - - - - 2.4 6.8 5.5 2.9
HINWO 4.9 - 6.4 5.9 7.5 3.4 - 7.7 7.8 - 4.7 6.9 - 5.6 8.2 8.2
IGAAN - - - - - - - - 8.3 8.5 7.8 5.7 7.5 - 6.2 9.2
JOBKL 5.3 6.8 6.8 6.9 4.5 6.2 7.2 7.2 - 7.3 5.0 4.0 - - - 7.0
KACJA 6.3 7.4 8.3 4.4 8.5 2.3 - 3.0 6.5 6.6 5.5 3.1 5.8 - 5.8 5.7
6.1 6.1 8.2 3.5 5.7 2.6 2.7 7.5 7.5 7.5 4.6 6.6 1.0 - 7.8 7.9
7.9 - 7.9 6.2 2.7 3.2 2.3 - - - 5.3 0.9 0.7 - - -
4.6 - 4.4 4.3 3.0 1.7 0.9 5.1 - - 3.9 0.9 0.9 - - -
KOSDE - - - - - - - - - - - - - - - -
- - - - - - - - - - 2.0 - - - 3.0 4.9
LUNRO - 1.8 1.6 - 1.7 6.9 - 1.2 8.1 9.0 8.9 7.4 9.2 6.4 6.4 8.0
MOLSI 2.8 - 5.9 6.0 4.0 - - - 6.3 - - 7.8 0.9 7.7 7.8 8.0
5.9 4.2 6.0 5.5 8.1 0.8 1.7 8.3 8.4 2.4 0.2 6.5 - 8.7 8.7 8.8
5.2 3.8 7.4 7.5 4.9 2.1 6.2 - - - - - - - - -
5.7 4.8 6.9 7.5 3.2 1.5 4.4 - - - - - - - - -
OCHPA 4.0 6.2 6.8 6.7 6.0 7.1 4.6 - 8.2 7.2 3.3 - 8.4 1.7 8.5 9.6
SCHHA 6.6 7.6 8.4 7.6 - 3.7 6.8 6.0 0.2 7.3 6.4 1.3 1.5 5.6 6.6 8.0
SLAST 2.9 3.3 5.3 - 4.6 - - 2.5 3.6 2.1 2.1 - - - 5.2 3.2
STOEN 6.0 8.0 7.9 8.1 7.2 8.3 5.2 4.8 8.4 7.5 - 8.6 6.9 - 8.8 8.8
5.0 8.1 7.9 8.2 6.2 7.2 4.2 2.7 7.4 6.4 - 6.1 7.1 - 8.8 8.8
5.0 8.0 7.8 8.1 8.2 7.2 4.1 5.5 8.4 6.4 - 5.6 7.0 - 8.8 8.8
STORO - - 7.3 6.9 7.0 - - - - - - - - - - -
STRJO 3.6 6.9 4.7 7.0 0.7 5.0 6.8 6.7 2.8 2.0 6.7 5.7 3.9 4.8 6.0 6.3
4.4 5.8 6.8 6.9 - 2.2 3.5 6.2 3.5 - 4.3 3.9 4.8 4.0 5.7 2.7
5.6 5.2 6.7 5.4 - 5.2 5.4 6.2 5.3 - 6.8 7.0 5.2 5.2 7.2 6.0
TEPIS 8.3 6.7 4.9 8.1 8.0 - - - - - - - - - 6.6 4.0
YRJIL 4.9 5.1 - 5.4 5.3 3.6 5.7 - 3.5 1.7 - 3.4 0.3 - 6.6 5.3
-------------------------------------------------------------------------------------
Sum 157.4169.8205.0192.7154.3141.3107.1128.5159.9142.2127.5149.3126.3 98.8216.3215.9
3. Results (Meteors)
====================
Sep 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BENOR - - - - - - - - - - - - - - -
- - - - - - - - - - - - 5.7 4.3 6.0
BRIBE 6.3 1.9 1.1 0.3 2.3 1.1 7.5 9.8 - 5.6 0.9 5.8 3.8 - -
CASFL 5.3 0.3 - 1.2 - 7.7 4.2 - - 1.6 0.2 1.5 - 0.2 -
CASFL 16 1 - 4 - 21 12 - - 3 1 3 - 1 -
20 3 5 - 31 26 20 - - 14 5 6 - 1 -
CRIST 30 1 7 28 55 22 29 41 41 16 15 26 4 1 -
24 7 2 20 26 21 29 28 23 14 19 13 6 3 -
ELTMA 28 - - 38 27 25 23 - - 35 4 26 - - -
GONRU 56 6 33 30 34 27 24 21 - 6 33 - 19 25 46
27 4 9 19 32 24 16 10 - 1 11 - 8 11 25
GOVMI 41 24 - - 23 41 39 3 - 14 - 25 - - 6
HERCA 8 4 - - 3 3 1 8 5 - 4 2 6 10 11
3 2 - - - - 7 8 5 6 9 4 4 13 31
HINWO 3 - - - 1 12 3 22 21 - - - - - 37
IGAAN 35 29 7 - 36 33 39 9 15 8 23 13 - 15 24
JOBKL - - - - - - - 24 - 41 - 56 - - -
KACJA 9 9 - - 16 - 10 1 - 8 - - - - -
29 6 - - 25 29 36 6 3 7 1 12 - - -
- 6 - - - - - - - 3 - - - - -
- - - - - - - - - 2 - - - - -
KOSDE - - - - - 5 5 - - 7 2 4 14 - -
LUNRO 26 27 27 12 16 12 5 4 3 26 12 - - - -
MOLSI - - - - - 35 61 89 45 32 42 74 4 - 24
5 1 - 4 16 26 29 39 18 10 3 13 - - 2
- - 10 8 5 12 22 20 4 4 3 18 - - 10
2 1 17 5 10 18 42 55 13 19 20 41 - - 26
OCHPA 18 1 9 9 33 30 20 4 19 11 1 16 - - -
SCHHA 12 - 9 - 11 5 20 11 - 14 - 11 7 - -
SLAST 4 - - - 7 5 6 - - 1 - - - - -
STOEN 61 - 34 58 69 44 45 15 40 41 8 44 - - -
36 - 20 23 43 29 31 18 30 25 6 33 - - -
54 - 28 47 89 48 46 26 48 43 7 42 - - -
STRJO 12 5 - 1 4 2 23 14 - 17 - 2 1 1 -
11 13 - - 10 - 29 34 - 31 - 15 4 - -
12 5 - - 8 - 26 24 - 22 - 2 - - -
TEPIS 27 24 - - 17 16 24 - - - - 13 - - 8
YRJIL 1 - - 33 9 - 19 1 15 34 26 13 38 45 30
-------------------------------------------------------------------------------
Sum 642 184 222 340 669 576 768 555 348 543 258 555 130 134 289
Sep 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
--------------------------------------------------------------------------------
BENOR - - - - - - - - - - 12 - - 19 8
- - - - - 3 - - 5 1 8 8 - - 11
BRIBE 16 31 38 6 19 43 31 - 27 50 42 35 1 - -
CASFL - 8 17 18 4 9 18 16 6 - - - 15 22 3
1 22 - - - - 27 31 7 - - - 25 32 4
CRIST 6 26 1 30 - 41 58 41 56 20 32 30 40 6 -
- 3 1 - - 2 1 6 8 19 24 - - - -
ELTMA - - - - - - 31 12 15 12 35 18 18 15 3
GONRU 19 - - 49 55 46 56 4 57 51 46 4 44 - 19
14 - - 23 20 34 27 - 27 26 23 10 12 - 8
GOVMI - - 3 5 19 27 41 34 11 12 27 34 24 25 7
HERCA 9 9 10 6 9 11 9 11 14 10 10 9 4 9 7
30 30 14 15 19 25 21 27 25 25 30 28 18 22 13
HINWO - - - 1 8 23 17 28 - 2 39 10 1 20 39
IGAAN 6 - 25 31 23 34 27 28 24 - 46 19 18 - 23
JOBKL 108 95 - 38 25 83 70 - 103 - - 40 - - -
KACJA - - 1 3 11 16 - 21 2 12 13 12 17 15 -
- 2 - 8 3 6 16 9 3 2 15 8 12 3 -
- - - - - - - - - - - - - - -
- - - - - - 18 6 - - - - - - -
KOSDE 14 7 11 7 11 8 7 - 8 11 6 5 - - -
LUNRO 47 48 1 - 4 55 35 7 64 57 32 42 - 2 -
MOLSI - - - 89 92 95 99 77 105 87 149 153 75 62 19
- - 1 15 23 22 18 15 8 13 35 29 14 16 8
23 22 33 26 7 17 28 9 27 34 30 34 - 26 2
40 35 63 53 14 23 50 7 57 36 55 51 1 25 1
OCHPA - - - 18 8 12 19 14 2 - 10 25 23 39 -
SCHHA - 16 7 10 14 27 13 - 26 13 21 8 - - 1
SLAST - 9 3 8 - 12 23 5 7 - 8 5 6 3 -
STOEN - 18 17 51 38 32 54 46 35 22 71 40 46 16 2
- 6 7 24 18 20 37 44 16 12 30 29 20 4 4
- 17 9 39 30 33 66 60 20 8 68 46 51 18 8
STRJO - 16 28 7 - 27 12 - 9 5 9 5 - 2 -
32 23 38 25 - 37 28 - - 6 26 20 - - -
12 6 20 15 - 17 11 - - 1 21 12 - - -
TEPIS - - - 19 13 12 20 17 7 13 22 8 9 - -
YRJIL 21 31 9 23 21 4 - 35 52 27 25 2 17 21 27
-------------------------------------------------------------------------------
Sum 398 480 357 662 508 856 988 610 833 587 1020 779 511 422 217
Sirko Molau, 2009/11/11