Giacobinid shower 2000.


First Report on Oct. 8/9
A few GIAs meteors appeared on Oct. 7/8, 2000 in Japan. I heard that OSAKA saw 2 GIAs during 10 minuts in the evening and he observed GIAs HR=1-2 on 14hUT, However, I don't hear this detail data. SATMI saw 2 GIAs on 09hUT and his wife also saw 1 GIAs on 12hUT. The former one was Mag=0 and 2 , the latter one was Mag=0. I observed 1 GIAs on 09h30m-10h:30mUT and saw 1 GIAs before observation. The former one was Mag=2 , the latter one was Mag=0.


Secondary Report on Oct. 8/9
I suppose that GIAs surely appeared about HR=2-3 during 18h-21hUT on Oct. 7/8, 2000 in spite of before maximum day.
To change the subject, two fireballs witnessed at 08h40mUT and 09h11mUT on Oct. 7/8, 2000. It has not been certain yet whether these fireballs were belong to GIAs. But, there is a possibility of GIAs fireball. Besides this, GIAs bright meteors witnessed 08hsUT(Ls=194.4).


< Observation Period >
  October 4/5 - 7/8

< Observation site >
OGAHI : Hiroshi Ogawa          Sakura, Tsukuba, Ibaraki, Japan.              140d06' , +36d06'
OSAKA : Kazuhiro Osada         Oyama, Shizuoka, Japan.                       138d59' , +35d21'
HASTA : Takema Hashimoto       Shimoyugi, Hachioji, Tokyo, Japan.            139d22' , +35d38'
MATYU : Yukihisa Matsumoto     Fujihashi, Ibi, Gifu, Japan.                                   
MIYMA : Masako Miyazaki        Sakura, Tsukuba, Ibaraki, Japan.              140d06' , +36d06'
MURMI : Minoru Muraki          Asoh, Ibaraki, Japan.                         140d31' , +36d01'
NOSKU : Kunio Nose             Shibetu, Hokkaido, Japan                                       
SATMI : Mikiya Sato            Ito, Shizuoka, Japan.                         139d06' , +34d54'
SUMKA : Kazuhiro Sumie         Chigusa, Hyogo, Japan.                        134d24' , +35d13'
                               Kobe, Hyogo, Japan.                           135d00' , +34d44'
TERKA : Kazumi Terakubo        Ito, Shizuoka, Japan.                         139d06' , +34d54'
UCHSH : Shigeo Uchida          Ageo, Kamitsuka, Tochigi, Japan.              139d30' , +36d37'
                               Awano, Kamitsuka, Tochigi, Japan.             139d29' , +36d37'
USUKE : Kenichi Usuki          Niizuru, ohnuma, Fukushima, Japan.            139d50' , +37d32'
YAMMA : Masayuki Yamamoto      Tohoku Univ, Iwate, Japan                     141d07' , +39d45'
YOSKA : Katsuhiro Yoshizaki    Asoh, Ibaraki, Japan.                         140d31' , +36d01'

< Data >
DATE       JST         UT    TIME aM Spo. GIA Other Lm  CL Dir Obs.  Meth.
----------------------------------------------------------------------------
Oct./2000
04/05 20:15-21:05 11:15-12:05 50   8   7   1   -    6.8  0  -  NOSKU TV(C) 50mm
04/05 21:00-22:00 12:00-13:00 60  25  25   0   -    6.2  0  Z  SUMKA V(C)
04/05 22:00-23:00 13:00-14:00 60  30  30   0   -    6.6  0  Z  SUMKA V(C)
04/05 23:00-23:30 14:00-14:30 30  15  15   0   -    6.7  0  Z  SUMKA V(C)
06/07 23:00-23:35 14:00-14:35 35   4   4   0   -    4.0  3  Z  SUMKA V(C)
07/08 18:30-19:10 09:30-10:10 40   0   0   0   -    4.0  3 Lyr MATYU V(C)
07/08 18:20-19:30 09:20-10:30 70   5   3   2   -    3.5  0 Lyr HASTA V(C)
07/08 18:46-19:46 09:46-10:46 45  10   8   2   -    4.6  3 Cyg UCHSH V(C) *
07/08 20:10-21:00 11:10-12:00 50  24  20   4   -    5.3  1 Dra OSAKA V(C)
07/08 20:11-20:42 11:11-11:42 30   8   5   3   -    4.3  3 Cep UCHSH V(C) *
07/08 20:20-20:50 11:20-11:50 30   1   1   0   -    4.4  1  Z  TERKA V(C)
07/08 20:30-21:15 11:30-12:15 45   2   2   0   -    3.0  0 Dra OGAHI V(C)
07/08 20:30-21:15 11:30-21:15 45   4   4   0   -    3.0  0 Dra MIYMA V(C)
07/08 21:00-22:00 12:00-13:00 60   4   2   2   0    4.5  0  N  USUKE V(C)
07/08 21:00-22:15 12:00-13:15 75  24  17   7   -    5.0  2 Dra OSAKA V(C)
07/08 21:05-22:05 12:05-13:05 60   7   6   1   -    4.4  1 Cas UCHSH V(C)
07/08 21:20-21:50 12:20-12:50 30   2   2   0   -    4.6  1  Z  SATMI V(C)
07/08 21:30-22:00 12:30-13:00 30   2   2   0   0    4.4  0 Cep MURMI V(C)
07/08 21:50-22:50 12:50-13:50 60  12  12   0   -    4.7  0 Cep YOSKA V(C)
07/08 22:00-23:00 13:00-14:00 60   8   8   0   0    4.6  0 Cep MURMI V(C)
07/08 22:00-23:00 13:00-14:00 60   6   5   1   0    4.5  0  N  USUKE V(C)
07/08 22:50-23:50 13:50-14:50 60  15  15   0   -    5.1  1 Cep YOSKA V(C)
07/08 23:00-00:00 14:00-15:00 60   5   5   0   0    5.1  1 Cep MURMI V(C)
07/08 23:00-00:00 14:00-15:00 60  13  11   2   0    5.0  0  N  USUKE V(C)
07/08 00:00-01:00 15:00-16:00 60   5   5   -   1    5.3  0 Ori MURMI V(C)
07/08 00:00-00:50 15:00-15:50 50  10   9   1   0    5.0  0  N  USUKE V(C)
07/08 00:00-01:00 15:00-16:00 60  16  15   0   1    5.3  0  Z  YOSKA V(P)
07/08 01:00-02:20 16:00-17:20 80   5   5   -   1    5.5  0 Ori MURMI V(C)
07/08 01:00-02:20 16:00-17:20 80  20  19   0   1    5.6  0  Z  YOSKA V(P)
07/08 01:20-01:50 16:20-16:50 30   2   1   1   -    5.0  1  N  YAMMA V(C)
09/10 20:23-21:28 11:23-12:28 56   5   4   1   -    6.8  0  Z  NOSKU TV(C) 50mm *
09/10 20:55-21:30 11:55-12:30 35   7   7   0   -    4.7  3  Z  SUMKA V(C)
09/10 21:30-22:42 12:30-13:42 65   9   9   0   -    6.5  0  Z  NOSKU TV(C) 50mm *
09/10 22:45-23:50 13:45-14:50 60   8   6   2   -    7.2  0  -  NOSKU TV(C) 85mm *
10/11 19:00-19:30 10:00-10:30 30   3   3   0   -    4.0  0 Lyr HASTA V(C)

* : Stopped observation interval caused by cloud

Time  : Observed time interval
Total : Total number of meteors
Spor. : Number of Sporadic meteors
GIA   : Giacobinid meteor shower
Other : Other shower(STA, NTA, ORI and so on)
Lm    : Limiting magnitude of field stars
CL    : Cloud cover
Dir   : Observation direction(Z:Zenith)
Meth  : Observation method(C=Counting, P=Ploting)


Magnitude distributions
OSAKA(7/8)
+------+------------------------+-----+-----+---------+
|      |  1   2   3   4   5   6 | All | Ave |  Lm     |
+------+------------------------+-----+-----+---------+
|Dra |  1   3   4   3         |  11 | 2.8 | 5.0-5.3 |
+------+------------------------+-----+-----+---------+
|Spor. |  2   5  13  15   2     |  37 | 3.3 | 5.0-5.3 |
+------+------------------------+-----+-----+---------+

These data presented by NMS-Mailing list

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