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(meteorobs) Draconids in Japan : Preliminary results (fwd)
How do the Japanese get such high ZHR's !! while others had less numbers,
like 40-100 for a ZHR?
Mike
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---------- Forwarded message ----------
Date: Sun, 11 Oct 1998 19:31:00 +0900
From: "[ISO-2022-JP] ^[$B9bM|!!2m>4^[(B" <QGA00120@nifty.ne.jp>
Visual results in Japan (The Nippon Meteor Society).
ZHR has been computed with:
- gamma = 1.0 (correction of Radiant elevation)
- r = 2.6 (IMO Handbook for Visual Mereor Observers , Page 210)
(1) Hourly Result
- excluding:observations under unfavourable condition
(T<30m, Lm<4.0, Cl>0.4, RP-h<10deg)
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UT JST N ave-HR(Dra) ZHR(Dra) SD Remarks
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Oct.8, 1998
09:00-10:00 8/9 18:30 4 7 41 21
10:00-11:00 8/9 19:30 7 7 35 19
11:00-12:00 8/9 20:30 14 13 105 45
12:00-13:00 8/9 21:30 18 24 304 133
13:00-14:00 8/9 22:30 25 55 585 319
14:00-15:00 8/9 23:30 20 14 230 135
15:00-16:00 8/9 00:30 8 3 156 123
16:00-17:00 8/9 01:30 1 2 140 -
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Observers (38members) :
T.Hashimoto, I.Hatsukade, Ddot ito, K.Izumi, H.Izumimoto, Y.Kawai,
S.Kaya, I.Kisanuki, W.Kobayashi, K.Kuragaki, K.Maeda, K.Mameta,
T.Maruyama, K.Nakamura, Y.Nojima, K.Nozaki, H.Okayasu, K.Osada,
M.Sakaguchi, M.Sato, T.Sato, M.Takanashi, A.Takeda, S.Takeda,
K.Tanaka, Si.Tanaka, Sy.Tanaka, K.Terakubo, Y.Tonomura, T.Torigoe,
S.Uchiyama, S.Uehara, Y.Yabu, M.Yamamoto, S.Yanagi, S.Yoshida,
H.Yoshidome, S.Yoshino
Total observations (Oct.8) ： 4,636minutes (=77.27h)
Total number of Perseid meteors (Oct.8) ： 1,862
(2) 10-Minutely Result (11:00-15:00 UT)
- excluding:observations under unfavourable condition
(T<5m, Lm<4.0, Cl>0.4, RP-h<10deg)
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UT JST N ave-HR(Dra) ZHR(Dra) SD Remarks
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11:00-11:10 8/9 20:05 3 2 13 23
11:10-11:20 8/9 20:15 4 2 12 23
11:20-11:30 8/9 20:25 5 17 147 34
11:30-11:40 8/9 20:35 5 13 126 143
11:40-11:50 8/9 20:45 5 18 165 86
11:50-12:00 8/9 20:55 5 17 211 120
12:00-12:10 8/9 21:05 8 18 218 97
12:10-12:20 8/9 21:15 8 20 248 111
12:20-12:30 8/9 21:25 8 21 265 166
12:30-12:40 8/9 21:35 8 31 412 201
12:40-12:50 8/9 21:45 12 61 530 304
12:50-13:00 8/9 21:55 14 64 614 280
13:00-13:10 8/9 22:05 13 96 943 595
13:10-13:20 8/9 22:15 15 94 904 565
13:20-13:30 8/9 22:25 15 64 616 437
13:30-13:40 8/9 22:35 16 42 483 223
13:40-13:50 8/9 22:45 15 26 307 197
13:50-14:00 8/9 22:55 13 30 371 227
14:00-14:10 8/9 23:05 10 25 325 145
14:10-14:20 8/9 23:15 11 14 196 143
14:20-14:30 8/9 23:25 9 16 230 188
14:30-14:40 8/9 23:35 4 8 90 110
14:40-14:50 8/9 23:45 2 9 224 110
14:50-15:00 8/9 23:55 2 9 239 114
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Observers (23members) :
T.Hashimoto, Ddot ito, H.Izumimoto, Y.Kawai, W.Kobayashi, K.Kuragaki,
K.Mameta, K.Nakamura, H.Okayasu, K.Osada, M.Sato, T.Sato,
M.Takanashi, A.Takeda, S.Takeda, Si.Tanaka, Sy.Tanaka, K.Terakubo,
S.Uchiyama, S.Uehara, Y.Yabu, S.Yanagi, S.Yoshino
Total observations (Oct.8) ： 2,340minutes (=39.00h)
Total number of Perseid meteors (Oct.8) ： 1,402
See The Nippon Meteor Society Web Page.
http://www2u.biglobe.ne.jp/~nms/index_e.html
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Masaaki Takanashi (The Nippon Meteor Society / Gotemba city, JAPAN)
E-Mail : QGA00120@nifty.ne.jp
NMS-Web Page : http://www2u.biglobe.ne.jp/~nms/index_e.html
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