Report of The Leonids 1998 in Japan.

(By FAS; Fuchu Astronomical Society)

We tried to observe the meteor shower of Leonids at Nov.17-18.
We watched an active appearance of Leonids, but we could not observe the shower like in 1966 or 1833.

The peak of our observations was 18h-19h(UT) on Nov.17. But the peak was not sharp.

Report of visual observations

Nov./1998
DayUT min   Ls      h    Lm  Cl All Leo   HR  CHR  ZHR   Observer           
------+--+-------+-----+----+--+---+---+----+----+-----+--------------------
17.59  30  235.05   3.0  6.3  0  10   2    4    4  363   Mikiya Sato
17.61  30  235.07   8.7  6.1  1   6   2    4    5   92   Hideki Seo
17.64  30  235.09  14.5  6.1  2  19  11   22   33  266   Kazumi Terakubo
17.66  30  235.11  20.4  5.4  2   9   8   16   34  163   Katsuyuki Kobayashi
17.68  30  235.13  26.4  5.2  2  18  10   20   46  155   Shizuka Tanaka
17.70  30  235.15  32.5  5.3  0  18  12   24   42  107   Nobuya Kikuchi
17.72  30  235.18  38.6  5.6  0  35  20   40   61  124   Toru Nishino
17.74  30  235.20  44.7  5.1  3  *1  18   36   99  168   Hiroki Izumoto
17.76  30  235.22  50.8  5.3  2  *1  32   64  141  206   Noriko Yoshimura
17.78  30  235.24  56.8  5.6  5  *1  31   62  189  247   Kiyohide Nakamura
17.80  30  235.26  62.6  5.7  5  *1  32   64  186  223   Mikiya Sato
17.82  30  235.28  68.1  5.3  5  *1  27   54  190  212   Kazumi Terakubo
17.84  10  235.29  71.3  *2   9  *1   7   42             Satoru Iki

*1:Count only Leonids.
*2:Not look by cloud.
Place:Narusawa village (Yamanashi pref. Japan)
      138d 44.7'E, 35d 26.4'N

CHR = HR*Fa*Fb,  Fa = 1.6^(6.5-Lm),  Fb = 10/(10-Cl)
ZHR = CHR/(sin h)^1.5

Fire ball and Train of Leonids

We watched a long existent train of one fire ball which was appearant at 19h13m53s(UT).
Following images were pictures of that train.

1.Continuous pictures.

An interval of 5-15 seconds from one minute after the fire ball appearance.

2.Video.

We recorded with I.I. and DVCAM video system.

3. A picture from 4 minutes after the fire ball appearance.

This picture is from 4 minutes after the fire ball appearance to 5 minutes after that time.


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