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(meteorobs) Perseids 2002 in Japan - 5th announcement -



The Nippon Meteor Society (NMS)

  ---------------------------------------
  Perseids 2002  in Japan   -5th announcement-
          (Visual Observation)
  ---------------------------------------

n   : the number of data
PER : all meteors (Perseids)
Time:Total time (min.)
ZHR : r=2.0,gamma=1.0
Err. = ZHR * (1/SQRT(PER))

excluding:observations under unfavorable condition
          (Lm<4.5mag, Cl>0.4, RP-h<15deg, Time<30min.)

                      <daily results>
 DATE  JST        n   PER   Time    HR       ZHR    Err.
-----------------------------------------------------------
Jul 21d 03:00     4     6    240    1.5      2.9    1.2
Jul 22d 03:00     3     2    180    0.7      2.1    1.5
Jul 23d 03:00     0     -      -     -        -      -
Jul 24d 03:00     1     1    120    1.0      7.8    7.8
Jul 25d 03:00     1     2     60    2.0     12.7    9.0

Jul 26d 03:00     1     0     60    0.0      0.0     -
Jul 27d 03:00     4    15    240    3.8     10.2    2.6
Jul 28d 03:00     4    17    240    4.3     15.7    3.8
Jul 29d 03:00     0     -      -     -        -      -
Jul 30d 03:00     0     -      -     -        -      -

Jul 31d 03:00     5     5    255    1.3     11.1    5.0

Aug 01d 03:00     2     7    120    3.5     16.5    6.2
Aug 02d 03:00     1     3     60    3.0     13.8    8.0
Aug 03d 03:00     1     4     60    4.0     22.8   11.4
Aug 04d 03:00     1    12     60   12.0     36.2   10.5
Aug 05d 03:00     0     -      -     -        -      -

Aug 06d 03:00     3    23    183    7.6     20.7    4.3
Aug 07d 03:00     7    54    375    8.9     20.7    2.8
Aug 08d 03:00     7    86    410   12.7     22.8    2.5
Aug 09d 03:00    15   118    730   10.0     30.8    2.8
Aug 10d 03:00     6    49    320   10.2     43.6    6.2

Aug 11d 03:00    36   434   1960   14.2     47.6    2.3
Aug 12d 03:00    10   148    455   20.3     81.7    6.7
Aug 13d 03:00    30  1141   1400   47.4    148.1    4.4


                     <hourly results>

 DATE   JST        n   PER   Time    HR       ZHR    Err.
-----------------------------------------------------------
Aug. 09d 23:30     1     5     60    5.0     35.7   16.0 
Aug. 10d 00:30     2     7    120    3.5     23.2    8.8 
Aug. 10d 01:30     2    29    110   16.6     57.3   10.6 
Aug. 10d 02:30     1     8     30   16.0     64.8   22.9 

Aug. 10d 22:30     1     2     46    2.6     16.8   11.9 
Aug. 10d 23:30    10    76    543    8.4     40.6    4.7 
Aug. 11d 00:30     8    95    501   11.2     40.1    4.1 
Aug. 11d 01:30     9    97    483   12.8     40.3    4.1 
Aug. 11d 02:30     6   140    297   28.8     79.0    6.7 
Aug. 11d 03:30     1    23     30   46.0    118.9   24.8 

Aug. 11d 22:30     1     3     60    3.0     32.5   18.8 
Aug. 11d 23:30     3    54    180   18.0     79.4   10.8 
Aug. 12d 00:30     2    41     95   32.9    126.0   19.7 
Aug. 12d 01:30     0     -      -     -        -      -
Aug. 12d 02:30     2    14     60   14.0     42.4   11.3 
Aug. 12d 03:30     1     9     30   18.0     46.2   15.4 

Aug. 12d 22:30     1     8     30   16.0     74.5   26.3 
Aug. 13d 23:30     2    44     90   24.0     86.2   13.0 
Aug. 13d 00:30     5   172    230   41.7    158.0   12.0 
Aug. 13d 01:30    10   366    520   43.2    149.5    7.8 
Aug. 13d 02:30     6   358    310   67.5    180.8    9.6 
Aug. 13d 03:30     5   190    180   57.5    153.8   11.2 
Aug. 13d 04:30     1    13     30   26.0     57.8   16.0 


Total observation time : 7,528min. (=125.47h)
Total Perseids meteors : 2,127meteors


Observers(29members):

Shinobu AMIKURA, Mitsunori IWAMOTO, Shigeo UCHIYAMA,
Hiroshi OGAWA, Kazuhiro OSADA, Hiroyuki KATO,
Misaki KANETAKA, Atsuyoshi KAWAURA, Yasuhiro KAWASAKI,
Toru SAGAYAMA, Koetsu SATO, Mikiya SATO, Kazuhiro SUMIE,
Takashi SEKIGUCHI, Hirotaka SERIZAWA, Keiko TANAKA,
Shoichi TANAKA, Takema HASHIMOTO, Takashi HIGUCHI,
Ken-ichi FUSHIMI, Yukihisa MATSUMOTO, Hidekatsu MIZOGUCHI,
Yumi MITAMURA, Satomi YOKOCHI, Minoru MURAKI, Keiko MORINAGA,
Ysuo YABU, Katsuhiro YOSHIZAKI, Masaaki YOSHIMURA

(Although the observing condition was not good, I receive reports.
 Observers are: Minoru SHIMIZU, Mitsuhiro FUJITA, Yoshiaki
 FUJIYOSHI, Kayo MIYAO, Yoshiyuki HAMAGUCHI, Takuya MARUYAMA)


with best wishes
Hiroshi Ogawa



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

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