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(meteorobs) Perseids Observation in 1999.



Hi All,

As I have finished the sum of my and my friend observation for
Perseids, I show the observation data as below.
On August 11/12 and 12/13, it was bad weather most of Japan.  But
fortunately, it was fine weather in Mt. Fuji!  I managed to observe the
Perseids for about 4 hours during two days.  The Perseids activity was
normal before half a day at maximum.  I expect to observed the primary
peak(new peak).  But, I didn't see the especially activity during
obsevation.


The preliminary results of Japanese observations are now available
as following URL.

  http://www2u.biglobe.ne.jp/~nms/nmsnews_e.html
  http://plaza.across.or.jp/~suzukima/99perdatae.html


Clear skies.  Takema,

===============================================================================
Perseids Observation in 1999


Observation Period:
  August 11-13, 1999.

Observation site:
  A : Mt.Fuji, Gotennba, Shizuoka, Japan      138d48m , +35d20m
  B : Oyama, Shizuoka, Japan                  138d57m , +35d22m

Observers (E-mail) :
  Takema Hashimoto : HASTA  (thashi@din.or.jp)
  Kazuhiro Osada   : OSAKA  (k-osada@mud.biglobe.ne.jp)

Conditions:
  Very clear sky.

Observation method:
  Visual , Counting

Observational Data:
  Date       UT     Time Total Spor. PER NDA SDA CAP KCG Lm Cl Dir Obs.  Site
  ---------------------------------------------------------------------------
  Aug/1999
  11/12 16:30-17:30  60    46    21   20  3   0   1   1  6.2 0 And HASTA A
  11/12 17:30-18:30  60    38    10   22  2   2   0   1  6.0 0 Per HASTA A
  11/12 18:30-19:00  30    14     6    8  0   0   0   0  5.5 0 Per HASTA A
  12/13 16:00-17:00  60    70    19   44  5   1   0   1  6.2 0 And HASTA A
  12/13 17:00-17:45  45    60    18   42  0   0   0   0  6.0 0 Per HASTA A

                                         NDA+ NIA+
  Date       UT     Time Total Spor. PER SDA  SIA CAP KCG Lm Cl Dir Obs.  Site
  ----------------------------------------------------------------------------
  11/12 10:45-12:15  90    41    29    7  3    0   1   1  5.5 2  Z  OSAKA B
  12/13 16:55-18:00  65   203    40  145  9    4   2   3  6.5 0  Z  OSAKA A
  12/13 18:00-18:46  46   169    32  126  4    2   3   2  6.3 1  Z  OSAKA A

About Aquarids complex in this observation.
HASTA observed Delta Aquarids only.
OSAKA observed Delta Aquarids and Iota Aquarids without distinction of
North and South.

Time : Observed time interval
Total: Total number of meteors
Spor.: Number of Sporadic meteors
Lm   : Limiting magnitude of field stars
CL   : Cloud cover
Dir  : Observation direction(Z:Zenith)


Magnitude distribution
HASTA
(11/12)   -4 -3 -2 -1  0  1  2  3  4  5  All  Ave
-------------------------------------------------
PER              1  1  1  4 11 14 14  4   50  2.8
NDA                                4  1    5  3.2
SDA                             1  0  1    2  
CAP                             1          1  
KCG                       1  1             2  
Spor.                     2  4  9 15  8   38  3.6
All              1  1  1  7 17 28 31 12   98  3.1

(12/13)   -4 -3 -2 -1  0  1  2  3  4  5  All  Ave
--------------------------------------------------
PER           1  2  2  4  9 17 22 21  7   86  2.6
NDA                             3  2       5  3.4
SDA                             1          1  
CAP                                        0  
KCG           1  0  0  0  0  0  0  0  0    1  
Spor.                  1  2  3 11 13  7   37  3.5
All           2  2  2  6 11 20 37 36 14  130  2.8

OSAKA
(12/13)   -4 -3 -2 -1  0  1  2  3  4  5  6  All  Ave
----------------------------------------------------
PER           1  3 10 12 19 31 74 85 36     271 3.0
NDA + SDA                       5  7  1      13 3.7
NIA + SIA                       1  1  4       6 4.5
CAP                             1  3  1       5 4.0
KCG        1  0  0  0  0  0  0  1  3          5 2.2
Spor.                  2  4  6 15 26 16  3   72 3.7


-----------------------------------
thashi@din.or.jp  Hashimoto, Takema
Minor Meteor Shower Circular(MMSC)
URL : http://www.din.or.jp/~thashi/index_E.htm
-----------------------------------
Nippon Meteor Society (NMS)
Association of Meteor Observers in and around Tokyo Area (AMOTA)
-----------------------------------

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