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(meteorobs) 2004 Quadrantids in JAPAN (Visual) Vol 1



Hello all,

Mr.Shigeo UCHIYAMA updated Japanese visual flash annoucement.
Although the peak time was predicted at daytime in Japan,
the high activity was observed.

 ---------------------------------------------------------
   2004 Quadrantid FLASH in JAPAN (Visual Observation) (1)
              (The Nippon Meteor Society)
         - calculated by Shigeo UCHIYAMA(NMS) -
 ---------------------------------------------------------

 * excluding:observations under unfavorable condition
    (Lm<4.1mag, Cl>=0.3, RP-h<15deg)

 Nind.: the number of observers during night
 Nobs : the number of observers
 Teff : observed period (hr)
 QUA  : the number of Quadrantid meteors
 HRave: average HR
 ZHRave:average ZHR with population index = 2.0
 Err. : ZHRave/sqrt(LEO)


<Daily Analysis> http://www.nms.gr.jp/qua04daily.gif

 Time(UT)  Nind. Teff  QUA  HRave  ZHRave  Err.
-----------------------------------------------
 Dec  27d   2     2.0    5   2.5     5.5   2.5
 Dec  28d   1     1.0    2   2.0     6.7   4.7
 Dec  29d   2     2.0    6   3.0     6.8   2.8
 Dec  30d   0     0.0    -    -       -     -
 Jan  31d   2     2.3    8   3.5     8.7   3.1
 Jan   1d   2     4.5   17   3.8    15.6   3.8
 Jan   2d   4     5.2   58  11.2    27.8   3.7
 Jan   3d  10    20.9  700  33.5   105.5   4.0


<Hourly Analysis>

    Time(UT)   Nind. Teff  QUA  HRave  ZHRave  Err.
---------------------------------------------------
 Jan 3d 17:00    4    4.0   67   16.8  110.3  13.5
 Jan 3d 18:00    4    4.3  142   33.0  123.5  10.4
 Jan 3d 19:00    4    3.5   65   18.6   62.2   7.7
 Jan 3d 20:00   11    8.8  399   45.3  108.1   5.4

Total Quadrantid meteors : 796
Total Observed Time   :  37.9 hr


Observers(Teff:hours):   ---- 9 observers
Takema HASHIMOTO, Kazuhiro OSADA, Kazuhiro SUMIE, Minoru MURAKI,
Hiroyuki KATOH, Shigeo UCHIYAMA, Yoshihiro HIGA, Shin-ichiro YANAGI,
Atsushi KISANUKI,

And we received reports from following members.
Koetsu SATO, S. HAYAMIZU, Kumiko KAI


----------------------------------
Hiroshi Ogawa (University of Tsukuba, JAPAN)
mailto: HZH02257@nifty.ne.jp
homepage: http://homepage2.nifty.com/~baron/
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