(meteorobs) VANMC 12-13/8/04
Michel Vandeputte
michelvandeputte at hotmail.com
Sat Aug 21 11:54:01 EDT 2004
Hi,
with some delay, I present you my observing report from 12-13/8. After some thunderstorms in the evening it became very clear. A local wind, called "the mistral" brought our team crystal clear skies ! Perseid activity was high, but in decline. The difference in the activity around 21 UT, between 11-12/12-13/8 was big...explains us enough, I presume. Highlight of the night ; a -8 fireball at 02.23 UT with a 3' persistent train. An other remarkable detail was the activity during the interval 22.00-22.20 UT : see the magnitude distributions : -4/-3/-2/-1 in short time. Was there something going on or was it pure coincidense ?
kind regards !
Day : 12-13 Month : august Year : 2004
begin : 20.30 UT end : 03.10 UT
Location : Reillane- France long. 5.7 E lat. 44 N alt 700 m
Observer : Vandeputte Michel IMO code ; VANMC
Method : tape recorder - one minute countings.
Field : east - south east.
Observed Showers :
Perseids (alfa 47° / delta +58°)
Delta Aquarids South (alfa 350° / delta -13°)
Delta Aquarids North (alfa 337° / delta -04°)
Iota Aquarids South (alfa 342° / delta -14°)
Northern Iota Aquarids (alfa 320° / delta -7°)
Kappa Cygnids (alfa 284° / delta +58°)
Interval analyse (all times in UT)
Period UT Teff F Lm -8 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 Nper Nother
20.30-20.50 0.333 1.00 6.80 0 0 0 0 0 0 0 1 1 2 0 4 11
20.50-21.00 0.167 1.00 6.80 0 0 0 0 0 2 0 0 1 1 0 4 2
21.00-21.20 0.333 1.00 6.80 0 0 0 0 0 0 1 3 2 3 0 9 2
21.20-21.30 0.167 1.00 6.80 0 0 0 0 0 1 1 2 2 3 0 9 4
21.30-21.40 0.167 1.00 6.80 0 0 0 0 0 0 0 1 3 1 1 6 2
21.40-21.50 0.167 1.00 6.80 0 0 1 0 0 0 0 0 2 1 0 4 2
21.50-22.00 0.167 1.00 6.80 0 0 0 0 1 0 1 1 6 1 0 10 3
20.30-22.00 1.500 1.00 0 0 1 0 1 3 3 8 17 12 1 46 26
22.00-22.20 0.333 1.00 6.70 0 1 1 1 1 0 0 1 7 3 0 15 5
22.20-22.30 0.167 1.00 6.70 0 0 0 0 0 2 0 0 4 4 0 10 2
22.30-22.40 0.167 1.00 6.70 0 0 0 0 0 0 0 3 4 2 0 9 1
22.40-22.50 0.167 1.00 6.70 0 0 0 0 0 0 2 1 1 3 0 7 1
22.50-23.00 0.167 1.00 6.70 0 0 0 0 0 1 0 0 2 5 0 8 3
22.00-23.00 1.000 0 1 1 1 1 3 2 5 18 17 0 49 12
23.00-23.10 0.167 1.00 6.70 0 0 0 0 1 1 1 0 3 0 0 6 4
23.10-23.20 0.167 1.00 6.70 0 0 0 0 0 2 2 2 2 1 1 10 1
23.20-23.30 0.167 1.00 6.70 0 0 0 0 0 0 0 4 3 4 0 11 1
23.30-23.40 0.167 1.00 6.70 0 0 0 0 0 0 0 3 2 1 0 6 1
23.00-23.40 0.67 1.00 0 0 0 0 1 3 3 9 10 6 1 33 7
23.40-00.20 Break for clouds. A -4 Per was observed in this period.
00.20-00.30 0.167 1.00 6.80 0 0 0 0 0 2 2 2 8 3 0 17 6
00.30-00.40 0.167 1.00 6.80 0 0 0 0 0 0 0 1 5 4 1 11 3
00.40-00.50 0.167 1.00 6.80 0 0 1 0 0 0 1 2 3 7 1 15 6
00.50-01.00 0.167 1.00 6.80 0 0 0 2 1 1 1 0 5 2 1 13 2
00.20-01.00 0.67 1.00 0 0 1 2 1 3 4 5 21 16 3 56 17
01.00-01.10 0.167 1.00 6.80 0 0 0 0 0 0 0 1 4 3 0 8 0
01.10-01.20 0.167 1.00 6.80 0 0 0 0 0 0 0 2 1 1 2 6 8
01.20-01.30 0.167 1.00 6.80 0 0 0 0 0 0 0 3 2 5 0 10 3
01.30-01.40 0.167 1.00 6.80 0 0 0 0 0 0 0 3 7 8 0 18 4
01.40-01.50 0.167 1.00 6.80 0 0 0 0 0 1 1 4 1 3 0 10 1
01.50-02.00 0.167 1.00 6.80 0 0 0 1 0 0 1 2 3 3 1 11 5
01.00-02.00 1.000 0 0 0 1 0 1 2 15 18 23 3 63 20
02.00-02.10 0.167 1.00 6.80 0 0 0 0 0 0 0 5 4 4 0 13 2
02.10-02.20 0.167 1.00 6.80 0 0 0 0 0 1 0 4 2 2 0 9 3
02.20-02.30 0.167 1.00 6.80 1 0 0 0 0 0 2 2 0 3 0 8 7
02.30-02.40 0.167 1.00 6.80 0 0 0 0 0 0 0 0 2 2 0 4 2
02.40-02.50 0.167 1.00 6.80 0 0 0 0 0 0 1 1 3 3 1 9 3
02.50-03.00 0.167 1.00 6.80 0 0 0 0 0 1 1 6 5 3 0 16 3
02.00-03.00 1.000 1 0 0 0 0 2 4 18 16 17 1 59 20
03.00-03.10 0.167 1.00 6.50 0 0 0 0 0 1 3 2 4 1 0 11 6
Total Perseid magnitude distribution :
-8 : 1 PER
-4 : 1 PER
-3 : 3 PER
-2 : 4 PER
-1 : 4 PER
+0 : 16 PER
+1 : 21 PER
+2 : 62 PER
+3 : 104 PER
+4 : 92 PER
+5 : 9 PER
Mean magnitude : 2.67
Persistent trains : 128 on 317 Perseids : 40 %
Other magnitude distributions ;
AQR +0(0) +1(0) +2(0) +3 (0) +4(1) +5(0)
KCG +0(0) +1(0) +2(1) +3(1) +4(1) +5(0)
SPOR +0(0) +1(0) +2(7) +3(26) +4(52) +5(19)
Summary report ;
Teff : 6.00 hours
total meteors : 425
Perseids : 317
Aquarids : 1
Kappa Cygnids : 3
Sporadics : 104
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