STAR CHART
No.1 : Plotted by Osada, Kazuhiro. All meteors plotting.
May alpha-Bootids was observed by Osada, Sakaguchi and Sumie on May 23, 2000. This shower appeared on May 30, 1970 and on May 23, 1998 in Japan. It was appeared after 2 years. There are some usuful data as follows.
<Observation Site>
AKASE (Akagi, Seiji) : Ryuten Obs., Yoshii, Okayama, Japan. 134d00mE , +34d53mN
HASTA (Hashimoto, Takema) : Shimoyugi, hachioji, Tokyo, Japan 139d22mE , +35d38mN 24/25,25/26
Mt. Momokura, Ohtsuki, Yamanashi, Japan 138d58mE , +35d38mN 3/4
JOHCA (Johannink, Carl.F.) : Gronau, Germany. 7d01mE , +52d13mN
KODHI (Kodama, Hiroyuki) : Yamada, Otaru, Hokkaido, Japan. 140d00mE , +43d11mN 10/11,17/18,18/19,20/21,24/25
Omotai, Otaru, Hokkaido, Japan. 140d58mE , +43d14mN 30/31
OGAHI (Ogawa, Hiroshi) : Mt.Ashio, Makabe, Ibaraki 140d09mE , +36d16mN
OSAKA (Osada, Kazuhiro) : Oyama, Shizuoka, Japan. 138d59mE , +35d21mN
SAKMI (Sakaguchi, Mitsue) : Saijyo, Hirosima, Japan. 132d45mE , +34d22mN
SATKO (Sato, Koetsu) : Zaoh, Miyagi, Japan. 140d29mE , +38d08mN 26/27
Yamamoto, Miyagi, Japan. 140d55mN , +37d57mN 29/30
SATMI (Sato, Mikiya) : Shimosuwa, Nagano, Japan. 138d08mE , +36d05mN
SUMKA (Sumie, Kazuhiro) : Yashiro, Hyogo, Japan. 135d04mE , +34d56mN 23/24,29/30
Chikusa, Hyogo, Japan 134d24mE , +35d13mN 24/25,25/26
Nishiharima Obs., Sayoh, Okayama, Japan 134d21mE , +35d01mN 28/29
<Observation>
DATE UT JST TIME Total Spor. MAB THE SAG other Lm CL Dir Obs. Method
----------------------------------------------------------------------------------------
May/2000
10/11 12:32-13:14 21:32-22:14 42 0 0 0 - - - 4.8 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I
17/18 11:29-14:52 20:29-23:52 212 5 5 0 - - - 4.7 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I , *1 min interrupt.
18/19 11:09-13:12 20:09-22:12 123 3 3 0 - - 0 4.6 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I
20/21 11:48-13:50 20:48-22:50 122 4 2 1 - - 1 4.7 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I
22/23 12:00-13:30 21:00-22:30 90 15 15 0 - 0 0 4.7 2 Z OSAKA V P
23/24 11:20-12:00 20:20-21:00 40 9 9 0 - - - 5.3 0 Z SUMKA V C
23/24 12:00-13:00 21:00-22:00 60 23 16 5 - 1 1 5.7 0 Z OSAKA V P
23/24 12:00-13:00 21:00-22:00 60 20 16 4 - - - 5.6 0 Boo SUMKA V C
23/24 12:00-13:00 21:00-22:00 60 6 6 0 - 0 0 5.4 0 Z AKASE V P
23/24 13:00-14:00 22:00-23:00 60 24 17 5 - 1 1 5.7 0 Z OSAKA V P
23/24 13:00-14:00 22:00-23:00 60 23 21 2 - - - 5.7 0 Z SUMKA V C
23/24 13:00-14:10 22:00-23:10 70 9 7 1 - 0 1 5.4 0 Z AKASE V P
23/24 13:05-14:05 22:05-23:05 60 12 8 4 - 0 0 6.0 1 Boo SAKMI V P
23/24 14:00-15:00 23:00-00:00 60 23 17 3 - 1 2 5.5 0 Z OSAKA V P
23/24 14:00-14:40 23:00-23:40 40 16 16 - - - - 5.6 1 Z SUMKA V C
24/25 11:00-12:00 20:00-21:00 60 22 17 1 - - 2 5.5 1 Z OSAKA V P
24/25 11:30-12:00 20:30-21:00 30 20 17 3 - - - 6.6 0 Boo SUMKA V C
24/25 11:39-13:41 20:39-22:41 122 6 4 1 - - 1 4.9 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I
24/25 11:50-13:00 20:50-22:00 70 12 10 2 - 0 0 5.9 0 Z AKASE V P
24/25 12:00-13:00 21:00-22:00 60 23 17 2 - 1 1 5.5 0 Z OSAKA V P
24/25 12:00-13:00 21:00-22:00 60 37 31 6 - - - 6.7 0 Boo SUMKA V C
24/25 13:00-14:00 22:00-23:00 60 24 22 1 - 0 1 5.5 0 Z OSAKA V P
24/25 13:00-14:00 22:00-23:00 60 44 36 8 - - - 6.8 0 Boo SUMKA V C
24/25 13:00-14:00 22:00-23:00 60 12 9 1 - 1 1 6.1 0 Z AKASE V P
24/25 13:40-14:40 22:40-23:40 60 3 3 0 - - 0 4.7 0 Z YOSKA V P
24/25 14:00-15:00 23:00-00:00 60 46 40 6 - - - 6.8 0 Z SUMKA V C
24/25 14:00-15:00 23:00-00:00 60 6 4 1 - 0 1 6.1 0 Z AKASE V P
24/25 14:30-15:30 23:30-00:30 60 7 4 1 0 1 1 4.5 0 Boo HASTA V C
24/25 15:00-16:00 00:00-00:50 50 31 26 5 - - - 6.4 0 Z SUMKA V C
25/26 11:50-13:00 20:50-22:00 60 6 4 2 - 0 0 5.9 0 Z AKASE V P *10 min interrupt.
25/26 12:00-13:00 21:00-22:00 60 45 37 8 - - - 6.7 0 Boo SUMKA V C
25/26 12:00-13:00 21:00-22:00 60 5 4 0 - - 1 4.8 0 Z YOSKA V P
25/26 13:00-14:00 22:00-23:00 60 45 39 6 - - - 6.8 0 Z SUMKA V C
25/26 13:00-13:50 22:00-22:50 50 7 5 0 - 2 0 6.0 0 Z AKASE V P
25/26 13:00-14:00 22:00-23:00 60 4 2 1 - - 1 4.8 0 Z YOSKA V P
25/26 14:00-14:30 23:00-23:30 30 25 21 4 - - - 6.8 1 Z SUMKA V C
25/26 14:00-15:00 23:00-00:00 60 8 4 3 0 1 0 4.5 0 Boo HASTA V C *3 meteors appeared during 2 minuts.
25/26 14:00-15:00 23:00-00:00 60 3 3 0 - - 0 5.2 0 Z YOSKA V P
25/26 14:00-15:20 23:00-00:20 80 13 12 0 - 1 0 5.5 2 Z OSAKA V P
25/26 14:00-15:00 23:00-23:40 40 4 2 1 - 0 1 5.7 0 Z AKASE V P
25/26 22:24-23:30 66 9 8 - 1 - - 6.0 0 Dra JOHCA V P
25/26 23:30-00:30 60 8 8 - 0 - - 6.0 0 Dra JOHCA V P
25/26 15:30-16:55 23:30-00:55 65 41 41 - - - - 6.7 2 Z SUMKA V C *20 min interrupt.
26/27 13:30-14:30 22:30-23:30 60 4 4 0 - 0 0 5.2 4 Boo SATKO V P
26/27 13:40-14:50 22:40-23:50 70 4 2 2 - - - 3.5 4 Z OGAHI V P
26/27 14:00-15:00 23:00-00:00 60 13 12 1 - 0 0 5.3 1 Z OSAKA V P
26/27 15:00-16:00 00:00-01:00 60 16 13 1 - 1 1 5.3 1 Z OSAKA V P
26/27 16:00-17:00 01:00-02:00 60 13 13 0 - 0 0 5.5 1 Z OSAKA V P
28/29 11:00-12:00 20:00-21:00 60 27 26 0 - - 1 6.0 0 Z OSAKA V P
28/29 12:00-12:45 21:00-21:45 45 13 13 - - - - 6.0 3 Z SUMKA V C
28/29 12:00-13:00 21:00-22:00 60 26 26 0 - 0 0 6.0 1 Z OSAKA V P
28/29 13:00-13:45 22:00-22:45 45 5 4 0 0 0 1 4.8 0 Boo HASTA V C
28/29 13:00-14:00 22:00-23:00 60 28 27 0 - 1 0 5.8 1 Z OSAKA V P
28/29 13:00-14:00 22:00-23:00 60 20 18 2 - - - 5.9 2 Z SUMKA V C
28/29 14:00-15:00 23:00-00:00 60 33 28 5 - - - 6.4 0 Z SUMKA V C
28/29 15:00-16:00 00:00-01:00 60 38 32 6 - - - 6.5 0 Z SUMKA V C
28/29 16:00-16:50 01:00-01:50 50 27 27 - - - - 6.3 2 Z SUMKA V C
28/29 17:15-18:15 02:15-03:15 60 17 17 0 - 0 0 5.5 1 Z OSAKA V P
29/30 11:40-13:00 20:40-22:00 80 23 23 - - - - 5.9 3 Z SUMKA V C
29/30 12:00-13:00 21:00-22:00 60 30 20 2 - 1 1 6.1 1 Z OSAKA V P
29/30 13:00-14:00 22:00-23:00 60 33 29 4 - - - 6.2 2 Z SUMKA V C
29/30 13:00-14:00 22:00-23:00 60 31 23 2 - 1 2 6.0 0 Z OSAKA V P
29/30 13:20-14:00 22:20-23:00 40 5 5 0 - 0 0 5.9 0 Boo SATKO V P
29/30 14:00-15:00 23:00-00:00 60 33 29 4 - - - 6.3 1 Z SUMKA V C
29/30 14:00-15:00 23:00-00:00 60 9 9 0 - 0 0 5.9 0 Her SATKO V P
29/30 14:00-15:20 23:00-00:20 80 42 35 2 - 0 2 6.0 1 Z OSAKA V P
29/30 15:00-16:00 00:00-01:00 60 34 32 2 - - - 6.3 0 Z SUMKA V C
29/30 16:00-17:00 01:00-02:00 60 36 36 - - - - 6.4 0 Z SUMKA V C
29/30 17:00-18:00 02:00-03:00 60 34 34 - - - - 6.4 0 Z SUMKA V C
29/30 22:24-23:47 85 12 12 - 0 0 - 6.0 0 Dra JOHCA V P
30/31 12:00-13:00 21:00-22:00 60 16 16 0 - 0 0 5.5 2 Z OSAKA V P
30/31 13:09-14:34 22:09-23:34 85 7 6 0 - 0 1 6.1 0 Boo KODHI TV P R64 filter + 24mmF1.4 + I.I
30/31 13:15-14:00 22:15-23:00 45 2 1 1 - - 0 4.8 0 Z KODHI V P
30/31 14:05-15:35 23:05-23:35 30 1 1 0 - - 0 4.7 0 Z KODHI V P
30/31 16:45-18:15 01:45-03:15 90 20 20 0 - 0 0 5.3 2 Z OSAKA V P
Jun/2000
01/02 11:30-12:30 20:30-21:00 30 4 4 0 - - 0 5.6 0 Z SATMI V P
01/02 12:00-13:00 21:00-22:00 60 25 25 0 - 0 0 5.8 0 Z OSAKA V P
01/02 13:00-14:00 22:00-23:00 60 28 27 0 - 1 0 5.8 0 Z OSAKA V P
01/02 14:00-15:00 23:00-00:00 60 27 26 0 - 1 0 5.7 0 Z OSAKA V P
01/02 17:00-18:15 02:00-03:15 75 13 13 0 - 0 0 5.3 1 Z OSAKA V P
01/02 22:42-23:30 48 6 6 - 0 0 - 6.0 0 Dra JOHCA V P
01/02 23:30-00:22 52 6 6 - 0 0 - 6.0 0 Dra JOHCA V P
02/03 11:45-13:00 20:45-22:00 75 18 18 0 - 0 0 5.3 2 Z OSAKA V P
03/04 12:15-13:30 21:15-22:30 75 17 17 0 - 0 0 5.5 2 Z OSAKA V P
03/04 17:00-18:15 02:00-03:15 75 18 16 0 - 0 2 5.3 2 Z OSAKA V P
03/04 17:35-18:25 02:35-03:25 50 9 8 0 0 0 1 5.3 0 Her HASTA V P
03/04 18:15-18:35 03:15-03:35 20 7 6 0 - 0 1 4.7 1 Z OSAKA V P
04/05 14:55-15:55 23:55-00:55 60 30 19 0 - 4 7 6.3 0 Her SAKMI V P
04/05 17:00-18:15 02:00-03:15 75 35 33 0 - 0 2 6.2 0 Z OSAKA V P
04/05 18:15-18:35 03:15-03:35 20 10 7 0 - 0 3 5.0 0 Z OSAKA V P
05/06 13:00-14:00 22:00-23:00 60 24 23 0 - 1 0 5.7 1 Z OSAKA V P
05/06 14:00-15:00 23:00-00:00 60 27 26 0 - 1 0 5.7 1 Z OSAKA V P
05/06 17:00-18:15 02:20-03:15 55 24 21 0 - 0 3 5.7 1 Z OSAKA V P
05/06 18:15-18:35 03:15-03:35 20 10 6 0 - 0 5 5.0 1 Z OSAKA V P
06/07 11:30-13:00 20:30-22:00 90 30 30 0 - 0 0 5.6 1 Z OSAKA V P
06/07 14:30-15:30 23:30-00:30 60 6 4 - 1 1 0 4.8 0 Her HASTA V P
06/07 17:00-18:15 02:00-03:15 75 34 28 0 - 0 2 5.8 1 Z OSAKA V P
06/07 18:15-18:35 03:15-03:35 20 11 5 0 - 0 5 5.0 1 Z OSAKA V P
07/08 11:00-12:00 20:00-21:00 60 13 13 0 - 0 0 5.3 0 Z OSAKA V P
07/08 12:00-13:10 21:00-22:10 70 17 17 0 - 0 0 5.5 1 Z OSAKA V P
07/08 16:45-18:15 01:45-03:15 90 42 33 0 - 1 4 6.0 1 Z OSAKA V P
07/08 18:15-18:35 03:15-03:40 25 11 6 0 - 0 5 4.8 1 Z OSAKA V P
07/08 22:15-23:15 60 9 9 - - 0 - 6.1 0 Dra JOHCA V P
07/08 23:15-00:30 75 10 9 - - 1 - 6.0 0 Dra JOHCA V P
08/09 22:54-23:45 51 8 8 - 0 - - 6.0 0 Dra JOHCA V P
08/09 23:45-00:32 47 9 7 - 2 - - 6.1 0 Dra JOHCA V P
Time : Observed time interval
Total: Total number of meteors
Spor.: Number of Sporadic meteors
MAB : Number of May Alpha-Bootids meteors
THE : Number of Tau-Herculids meteors (associated with comet 73P/Schwassmann-Wachmann 3)
HR : Hourly rate
Lm : Limiting magnitude of field stars
CL : Cloud coverage
Dir : Observation direction ( Z = Zenith )
Meth.: Method (V = Visual, C = Counting, P = Plotting, TV = TV, S = Single station)
<Magnitude distribution>
|-3 -2 -1 0 1 2 3 4 5 6| All| Ave| Lm | Obs.
-----+--------------------------------------+----+----+-------+-----
23/24
MAB | 9 4 | 13|4.31|5.5-5.7| OSAKA
Spor.| 3 10 24 9 | 46|3.85|5.5-5.7| OSAKA
MAB | 1 1 4 | 6|3.33|5.6-5.7| SUMKA
Spor.| 4 18 36 4 | 62|3.65|5.3-5.7| SUMKA
24/25
MAB | 1 2 1 | 4|4.00|5.5 | OSAKA
Spor.| 2 8 30 16 | 56|4.07|5.5 | OSAKA
MAB | 1 6 17 4| 28|4.82|6.4-6.8| SUMKA
Spor.| 2 3 6 19 56 57 7| 150|4.15|6.4-6.8| SUMKA
25/26
MAB | 1 2 9 6| 18|5.06|6.7-6.8| SUMKA
Spor.| 1 1 2 7 15 52 55 7| 140|4.18|6.5-6.8| SUMKA
28/29
MAB | 1 2 6 4 | 13|4.00|5.9-6.5| SUMKA
Spor.| 1 2 4 6 21 47 35 2| 118|3.84|5.9-6.5| SUMKA
29/30
MAB | 1 5 | 6|4.83|6.0-6.1| OSAKA
Spor.| 1 14 46 17 | 78|5.00|6.0-6.1| OSAKA
MAB | 6 4 | 10|4.40|6.2-6.3| SUMKA
Spor.| 1 1 4 14 35 78 50 | 183|3.81|5.9-6.4| SUMKA
<Radiant point>
No. YMD(UT) CONST R.A DEC N d Wt Vel Mag HR Obs. Remarks
---------------------------------------------------------------------
1 2000/05/23.56 Alpha-Boo 210 +17 13 6 3 S-M 4.3 4.3 OSAKA Ploting
2 2000/05/23.56 Ryo- Boo 213 +30 4 2 1 rS-rR 4.0 1.3 OSAKA Ploting
3 2000/05/23.56 Alpha-Boo 213 +24 4 3 P S-rS 3.8 4.0 SAKMI Ploting
4 2000/05/24.56 Alpha-Boo 211 +18 4 5 1 S-rS 4.0 1.3 OSAKA Ploting
5 2000/05/24.56 Alpha-Boo 212 +16 4 1 P vS-M 3.5 1.3 AKASE Ploting
6 2000/05/25.55 Alpha-Boo 213 +16 3 2 P S-rS 3.7 1.2 AKASE Ploting
7 2000/05/29.57 Ryo- Boo 215 +30 4 2 1 rS-rR 4.5 1.2 OSAKA Ploting
8 2000/05/29.57 Alpha-Boo 218 +18 6 5 1 rS-M 4.8 1.8 OSAKA Ploting
N : Number of using meteors for Radiant
d : Diameter (deg)
Vel : Velocity (vS = Very Slow, S = Slow, rS = Rather Slow, M = Moderate
rR = rather Rapid, R = Rapid, vR = Very Rapid)
Mag : Mean magnitude
Time Chart of May alfa-Bootids observed by Osada, Sakaguchi and Sumie.
These numbers under the time are Magnitude of meteor.
<23/24>
12h(UT) 13h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
S 5 54 4 4 OSAKA
13h 14h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 5 5 4 OSAKA
4
14h 15h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 4 4 E OSAKA
<24/25>
11h 12h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
S S 5 5 5 SUMKA
12h 13h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 4 6 6 54 SUMKA
14h 15h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 5 5 5 5 6 5 5 SUMKA
15h 16h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
5 5 5 6 5 5 SUMKA
16h 17h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
5 4 5 4 2 E
<25/26>
12h 13h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
S2 6 5 5 54 64 SUMKA
13h 14h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
5 6 5 6 5 6 SUMKA
14h 15h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
5 6 5 5 E SUMKA
<28/29>
13h 14h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
S 4 4 SUMKA
14h 15h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 2 5 4 5 SUMKA
15h 16h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 3 4 4 3 5 E SUMKA
<29/30>
13h 14h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
S 4 5 5 5 SUMKA
14h 15h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 5 4 4 SUMKA
15h 16h
00m 05 10 15 20 25 30 35 40 45 50 55 00m
+----+----+----+----+----+----+----+----+----+----+----+----+
4 4 E SUMKA
Note)Numeric character is magnitude.
S:start
E:end
HR Chart
STAR CHART
No.1 : Plotted by Osada, Kazuhiro. All meteors plotting.
No.2 : Plotted by Sakaguchi,
Mitsue. All meteors plotting.
