(meteorobs) videoobservations 200911211-20091217

[Mikhail Maslov]

This observing week was marked with Geminid maximum on 13/14 December.
This night was the first clear one after almost a month of almost
total cloud cover. The sky was quite hazy, but it is much better than
nothing. In total, 194 meteors were recorded during Teff=12.29h.
Geminids showed a very sharp increase in activity after 17 UT, this
hour gave 22 shower members after 2,2,5,4,6 in the previous hours.
Also during 17-18 UT a row of bright meteors and fireball of the
Geminids appeared, the most bright was of -4.5 mag. After that
Geminids continued to show strong activity with 13-25 meteor per hour,
but much lesser average brightness. The visual profile for Geminids in
the IMO homepage shows that the main peak started after about 16-17 UT
on 13 December and my data confirm is quite well.
The next night 14/15 December had relatively clear sky mostly in its
firsh half, so meteor numbers are much less. But Geminids were still
showing a wealthy activity with higher average brightness than in the
previuos night.
In the nights 15/17 and 17/18 December Geminid activity came to almost
nothing, with only 4 and 2 shower members during Teff=10.44 and 8.52
hours, respectively. However, during the last night 6 COM meteors were
detected.



Date       Teff,h                    Meteors
2009.12.12  0.15   1 (GEM 1)
2009.12.13 12.29   194 (ANT 3, MON 3, HYD 1, GEM 160, COM 2, SPO 25)
2009.12.14  6.47   37 (ANT 2, GEM 28, SPO 7)
2009.12.15 10.44   22 (ANT 1, MON 1, URS 2, GEM 4, COM 2, SPO 12)
2009.12.16  0.52   0
2009.12.17  8.52   30 (ANT 1, URS 1, GEM 2, COM 6, SPO 20)

Total      38.39   277 (ANT 7, MON 4, HYD 1, URS 3, GEM 195, COM 10, SPO 64)

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Links (video and track images)
2009.12.12
http://narod.ru/disk/16345787000/vm20091212.avi.html (0.15 Mb),
http://narod.ru/disk/16344830000/CVBS_091212_n01.zip.html

2009.12.13
http://narod.ru/disk/16346765000/vm20091213.avi.html (27.1 Mb),
http://narod.ru/disk/16345265000/CVBS_091214_n01.zip.html


2009.12.14
http://narod.ru/disk/16347258000/vm20091214.avi.html (9.68 Mb),
http://narod.ru/disk/16345265000/CVBS_091214_n01.zip.html


2009.12.15
http://narod.ru/disk/16347500000/vm20091215.avi.html (4.48 Mb),
http://narod.ru/disk/16345298000/CVBS_091215_n01.zip.html


2009.12.17
http://narod.ru/disk/16348041000/vm20091217.avi.html (10.0 Mb),
http://narod.ru/disk/16345344000/CVBS_091217_n01.zip.html
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Remarkable events:
- 13 December 12:14 UT. Long GEM graser (D=1.40 sec, m=2.5);
- 13 December 12:43 UT. Long SPO meteor (D=1.20 sec, m=3.0);
- 13 December 13:58 UT. Long GEM meteor (D=1.20 sec, m=1.0);
- 13 December 14:56 UT. Long and bright GEM meteor (D=1.40 sec, m=-0.5);
- 13 December 14:59 UT. Long GEM meteor (D=1.08 sec, m=0.0);
- 13 December 16:03 UT. Long and very bright GEM meteor (D=1.32 sec,
m=-2.0);
- 13 December 16:20 UT. MON fireball (D=1.32 sec in
the FOV, m=-4.0, peak brt. is invis., train 0.40 sec);
- 13 December 16:36 UT. Long SPO meteor (D=1.12 sec, m=1.5);
- 13 December 16:47 UT. Long and very bright GEM meteor (D=1.08 sec in
the FOV, m=-2.0);
- 13 December 16:55 UT. GEM fireball (D=0.80 sec, m=-3.0);
- 13 December 17:34 UT. Long and very bright 1.24 meteor (D=1.24 sec in
the FOV, m=-2.5, train 0.40 sec);
- 13 December 17:41 UT. GEM fireball (D=1.36 sec, m=-4.5, train 0.60 sec);
- 13 December 17:42 UT. Long and very bright GEM meteor (D=1.04 sec,
m=-2.0, wake);
- 13 December 17:51 UT. GEM fireball (D=1.00 sec, m=-3.0, stationary);
- 13 December 18:31 UT. COM fireball (D=1.40 sec in the FOV, m=-4.0,
train 1.54 sec);
- 13 December 21:17 UT. Long SPO meteor (D=1.04 sec, m=1.0, from URS
radiant);
- 13 December 22:00 UT. GEM fireball (D=1.00 sec, m=-3.5, train 0.60
sec);
- 13 December 23:34 UT. Bright GEM meteor (D=0.60 sec, m=-2.0);
- 14 December 00:45 UT. Bright GEM meteor (D=0.92 sec, m=-2.0);
- 14 December 12:19 UT. Long and bright GEM meteor (D=1.12 sec,
m=-1.0, peak brt. is invis., wake);
- 14 December 12:32 UT. Long SPO meteor (D=1.04 sec, m=1.0);
- 14 December 14:09 UT. GEM fireball (D=1.88 sec, m=-3.0, train 0.40
sec);
- 14 December 14:19 UT. Long and bright GEM meteor (D=1.44 sec,
m=-1.0, peak brt. is invis.);
- 14 December 16:39 UT. Bright GEM meteor (D=0.88 sec, m=-2.0);
- 14 December 18:16 UT. GEM fireball (D=1.00 sec, m=-3.0, train 0.60
sec);
- 14 December 18:49 UT. Long ANT meteor (D=1.16 sec, m=0.5);
- 14 December 19:20 UT. Bright GEM meteor (D=0.92 sec, m=-2.0);
- 14 December 23:26 UT. Long and bright GEM meteor (D=1.04 sec,
m=-2.5, wake);
- 15 December 17:39 UT. SPO fireball (D=0.92 sec, m=-3.0, wake, trail
0.44 sec);

Best regards, Mikhail Maslov