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(meteorobs) IMO-NEWS: Giacobinids observation in Japan


------- Forwarded Message

Date: Thu, 08 Oct 1998 02:05:02 +0900
From: Hashimoto Takema <thashi@din.or.jp>
To: IMO-News <imo-news@imodot net>
Subject: Giacobinids observation in Japan - before maximum days -

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Generally speaking of Japanese observation until now, Giacobinids
activity was almost limited at Maximum day. But, Giacobinid shower
activity has already started in this year. Some observers witnessed its
meteors and detected its radiant points.
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Observers : 
  Hashimoto Takema  : HASTA
  Ito Osamu         : ITOOS
  Maeda Koji        : MAEKO
  Osada Kazuhiro    : OSAKA
  Sakaguchi Mitsue  : SAKMI
  Sekiguchi Takashi : SEKTA

Observation Period :
  Oct 2-7, 1998.

Observation site:
  HASTA : Mt.Momokura, Ohtsuki, Yamanashi, Japan    E:139.0 deg , N:35.6 deg
          Hachioji, Tokyo, Japan                    E:139.4 deg , N:35.6 deg
  OSAKA : Oyama, Shizuoka, Japan                    E:139.0 deg , N:35.3 deg
  MAEKO : Kiyotake, Miyazaki, Miyazaki, Japan                   ,           
  SAKMI : Higashi-Hiroshima, Hiroshima, Japan       E:132.6 deg , N:34.5 deg
  SEKTA : Asahi, Kawagoe, Saitama, Japan                        ,           

Observation method:
  visual , plotting

Observational Data:
  DATE    UT         JST    TIME aM Spo Gia Lm CL Dir Obs.  Meth.
  ---------------------------------------------------------------
  Oct/1998
  02 10:30-11:30 19:30-20:30 60   6  4   2  5.3 0 Dra HASTA V(P)
  02 11:30-12:30 20:30-21:30 60   4  4   0  5.1 0 Dra HASTA V(P)
  03 11:00-12:00 20:00-21:00 60   9  8   0  5.0 2  Z  OSAKA V(P)
  03 12:00-13:00 21:00-22:00 60  10 10   0  5.0 1  Z  OSAKA V(P)
  03 12:30-13:30 21:30-22:30 60   6  6   0  4.6 0 Cyg HASTA V(P)
  04 10:00-11:00 19:00-20:00 60   8  7   1  4.8 2  Z  OSAKA V(P)
  04 11:00-12:00 20:00-21:00 60   7  5   2  5.0 2  Z  OSAKA V(P)
  04 12:00-13:00 21:00-22:00 60   9  7   2  5.2 1  Z  OSAKA V(P)
  05 10:00-10:50 19:00-19:50 50  10  6   4  5.1 0 Dra SAKMI V(P)
  06 09:15-10:15 18:15-19:15 60   8  6   2  5.0 1  Z  OSAKA V(P)
  06 10:15-11:30 19:15-20:30 75  12  8   4  5.0 2  Z  OSAKA V(P)
  07 11:45-12:47 20:45-21:47 53   3  3   0  4.3 1 Cep MAEKO V(P)
  07 12:51-14:00 21:51-23:00 61   2  2   0  4.8 0 Cep MAEKO V(P)

  TIME    : Observed time interval
  Total   : Total number of meteors
  Spo     : Sporadic meteors
  Gia     : Giacobinids
  Lm      : Limiting magnitude of field stars
  CL      : Cloud cover
  Dir     : Observation direction(Z : Zenith)

Radiant point:
No.     YMD(UT)    CONST   R.A   DEC   N   d  Wt  Vel   Mag   HR  Obs.  Meth
- ----------------------------------------------------------------------------
1. 1998/10/04.48 Gamma-Dra 262   +52   4   1.5 1  S-rS  2.8  1.3  OSAKA V(P)
2. 1998/10/05.44    Mu-Dra 257   +54   4   3   P  rS    2.5  4.8  SAKMI V(P)
3. 1998/10/06.43 Gamma-Dra 265   +55   5   3   1  S-rS  3.2  2.2  OSAKA V(P)

  N      : Number of meteors
  d      : Diameter of R.P.
  Wt     : Weight(P,1-5  P : poor)
  Mag    : Mean Magnitude
  Vel    : Velosity(vS S rS M rR R vR)
                   <-Slow      Rapid->
Method : V:Visual, P:Plotting


Other information as below.
SAKMI saw a Giacobinid meteor around 10h UT on Oct. 1 and Oct. 3.
SEKTA saw a Giacobinid meteor with 0 magunitude at 9h44m UT on Oct. 2.
ITOOS saw a Giacobinid meteor with 1 magunitude around 10h UT on Oct. 6.
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----------------------------------
thashi@din.or.jp  Hashimoto Takema
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Minor Meteor Shower Circular 
http://www.din.or.jp/~thashi/
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