| Xaló | Dos Aguas |
|---|---|
| Koen Miskotte Marco Langbroek Carl Johannink Elisabeth Middelhoff Marc de Lignie Casper ter Kuile |
Arnold Tukkers Rita Verhoef Jos Nijland Robert Haas Romke Schievink |
|
1. Carl Johannink : Table 2. Carl Johannink : Graphs 3. Marco Langbroek : Table 4. Marco Langbroek : Graphs 5. Marc de Lignie : Audio-recording 6. Marc de Lignie : Graphs 7. Koen Miskotte : Table 8. Koen Miskotte : Magnitude distributions 9. Koen Miskotte: Graphs |
Observer: Carl Johannink (IMO-code JOHCA)
Date: 17/18 nov. 1999
Time: 22:43 - 03:48 UT; Teff=4.60 hours
Location: Xaló (Spain) at 38 44' N / 00 01' E
Center: R.A. 03h20m / decl. +70
Observed streams: Taurids, Leonids
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
22:43-23:58 1 1 3.50 7 3 2 5.3
23:58-00:13 1 2 2 1 3.50 1 6 5.8
00:13-00:28 1 1 3.00 1 2 5.8
00:28-00:45 1 2 6 6 2 3.35 3 1 17 5.9
(00:45-00:53=pause)
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
00:53-00:58 1 2 1 1 3.20 5 5.9
00:58-01:03 1 1 3 2 2 2.11 9 5.9
01:03-01:08 2 2 3 5 2.75 1 12 5.9
(01:08-01:10=pause)
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:10-01:11 1 1 2
01:11-01:12 1 1 1 2
01:12-01:13 1 1 1
01:13-01:14 1 1 2
01:14-01:15 1 1
01:15-01:16 1 2 1 1 4
01:16-01:17 1 1 2
01:17-01:18 1 2 1 1 5
01:18-01:19 1 1 1 1 4
01:19-01:20 1 1
01:10-01:20(sum) 1 2 1 7 5 6 2 2.63 2 1 24 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:20-01:21 1 1 1
01:21-01:22 1 2 3 1 7
01:22-01:23 2 1 3
01:23-01:24 1 1 3 2 1 7
01:24-01:25 1 2 3
01:20-01:25(sum) 1 2 9 8 1 3.29 2 21 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:25-01:26 1 2 4 2 1 9
01:26-01:27 1 2 3
01:27-01:28 2 3 1 6
01:28-01:29 1 1
01:29-01:30 1 2 1 1 5
01:25-01:30(sum) 1 1 3 7 7 5 3.38 1 24 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:30-01:31 1 2 3
01:31-01:32 1 2 1 2 6
01:32-01:33 1 1 2 4
01:33-01:34 2 1 2 3 1 9
01:34-01:35 1 2 1 4
01:30-01:35(sum) 1 6 3 8 5 3 2.69 26 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:35-01:36 2 1 2 5
01:36-01:37 1 1 1 1 1 5
01:37-01:38 1 1 1 3
01:38-01:39 1 2 1 4 8
01:39-01:40 1 1
01:35-01:40(sum) 1 2 4 5 3 7 3.05 22 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:40-01:41 1 2 2 1 6
01:41-01:42 1 2 2 2 7
01:42-01:43 2 2 2 2 3 1 12
01:40-01:43 2 4 6 6 6 1 2.52 25 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:43-01:44 1 3 6 10
01:44-01:45 1 3 7 3 14
01:45-01:46 1 2 2 5
01:43-01:46 1 1 5 8 8 6 3.34 29 5.9
(01:46-01:51=pause)
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
01:51-01:52 13
01:52-01:53 14
01:53-01:54 1 1 4 3 3 3.50 12
01:54-01:55 1 4 8 6 3.00 19
01:55-01:56 6 7 2 4 3.21 19
01:56-01:57 1 1 2 8 2 2 2.50 16
01:57-01:58 13
01:58-01:59 30
01:59-02:00 23
02:00-02:01 18
02:01-02:02 18
02:02-02:03 33
02:03-02:04 23
02:04-02:05 21
02:05-02:06 11
02:06-02:07 19
02:07-02:08 17
(02:08-02:15=pause)
02:15-02:16 8
02:16-02:17 14
02:17-02:18 16
02:18-02:19 15
02:19-02:20 8
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:20-02:21 1 1 1 3 4 2 3.17 12
02:21-02:22 1 2 1 1 3 2 2.50 10
02:22-02:23 1 8 1 1 2.82 11
02:20-02:23sum1 1 1 3 2 12 8 5 2.85 33 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:23-02:24 2 4 4 10
02:24-02:25 1 1 1 6 4 13
02:23-02:25(sum) 1 1 3 10 8 2.91 23 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:25-02:26 2 2 3 5 1 13
02:26-02:27 2 2 8 1 13
02:25-02:27(sum) 4 4 11 6 1 2.85 26 5.9
02:27-02:28 16
02:28-02:29 10
02:29-02:30 12
02:30-02:31 7
02:31-02:32 3
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:32-02:33 1 2 1 1 4
02:33-02:34 2 4 2 1 2 11
02:34-02:35 1 4 1 6
02:35-02:36 2 1 3
02:36-02:37 1 3 1 2 1 8
02:32-02:37(sum) 1 2 7 7 10 5 3.19 1 32 5.9
(02:37-02:39=pause)
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:39-02:40 1 2 1 4
02:40-02:41 1 3 3 1 8
02:41-02:42 1 1 2
02:42-02:43 2 4 6
02:43-02:44 2 3 5 1 11
02:39-02:44(sum) 1 2 9 15 4 2.55 31 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:44-02:45 1 3 1 5
02:45-02:46 3 2 2 7
02:46-02:47 1 1 2 2 2 8
02:47-02:48 1 1
02:48-02:49 2 5 1 8
02:44-02:49(sum) 2 2 10 10 5 3.48 29 5.9
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:49-02:50 1 2 1 1 4
02:50-02:51 2 3 5
02:51-02:52 1 1 1
02:52-02:53 1 1 2 1 1 5
02:49-02:53(sum) 1 1 4 7 1 1 2.40 3 15 5.8
(02:53-02:58=pause)
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
02:58-03:03 1 2 4 2 9
03:03-03:08 1 6 7 2 2 2 1 18
02:58-03:08(sum) 1 1 8 11 4 2 2.81 2 1 27 5.8
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
03:08-03:13 1 1 4 5 2 13
03:13-03:18 1 4 3 5 4 1 18
03:08-03:18(sum) 1 1 5 7 10 6 1 31 5.8
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
03:18-03:23 2 2 7 1 12
03:23-03:28 2 3 1 1 2 9
03:18-03:28(sum) 2 5 3 8 3 2.24 21 5.8
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
03:28-03:33 2 3 1 5 1 1 13
03:33-03:38 2 2 5 1 10
03:28-03:38(sum) 2 5 3 10 2 1 2.35 23 5.8
Time(UT): -4 -3 -2 -1 0 1 2 3 4 5 mL sp Tau Leo LM
03:38-03:43 1 1 1 3 2 1 9
03:43-03:48 1 1 4 2 8
03:38-03:48 2 2 1 7 4 1 2.71 17 5.8
-4 -3 -2 -1 0 1 2 3 4 5 msp total
sporadics: 4 3 11 5 3.74 23
-4 -3 -2 -1 0 1 2 3 4 5 mt total
Taurids: 2 4 1 2.57 7
Leonids: 960
Total number observed: 990 meteors in Teff=4.60 hours
Observer: Koen Miskotte (IMO-code MISKO)
Date : 17/18 november 1999
Time : 23:00 - 05:17 UT; Teff=5.80 hours
Location: Xaló (Spain) at 38 44' N / 00 01' E
Streams : Taurids, Leonids
Date Period UT Teff LeonidsOther meteors Total Total Lm Remarks
min. Taurids Spo Period Night
17-11-1999 23:00-23:30 30 0 1 4 5 5 5,6Observing method: counting, streams and magnitudes
17-11-1999 23:30-00:00 25 2 0 4 6 11 5,9
18-11-1999 00:00-00:35 35 15 0 4 19 30 6,2
18-11-1999 00:35-00:45 10 20 0 3 23 53 6,3
18-11-1999 00:45-00:51 6 10 1 3 14 67
18-11-1999 00:51-00:55 4 6 0 2 8 75 6,4
18-11-1999 00:55-00:59 4 6 0 1 7 82
18-11-1999 00:59-01:03 4 12 0 2 14 96
18-11-1999 01:03-01:07 4 9 0 1 10 106
18-11-1999 01:07-01:08 1 3 0 0 3 109
18-11-1999 01:08-01:09 1 5 0 1 6 115
18-11-1999 01:09-01:10 1 5 0 1 6 121
18-11-1999 01:10-01:11 1 4 0 0 4 125
18-11-1999 01:11-01:12 1 5 1 0 6 131
18-11-1999 01:12-01:13 1 5 0 0 5 136
18-11-1999 01:13-01:14 1 4 0 0 4 140
18-11-1999 01:14-01:15 1 4 0 1 5 145
18-11-1999 01:15-01:16 1 3 0 1 4 149
18-11-1999 01:16-01:17 1 4 0 0 4 153 6,5
18-11-1999 01:17-01:18 1 1 1 0 2 155
18-11-1999 01:18-01:19 1 5 0 1 6 161
18-11-1999 01:19-01:20 1 6 0 0 6 167
18-11-1999 01:20-01:21 1 7 0 0 7 174
18-11-1999 01:21-01:22 1 6 0 0 6 180
18-11-1999 01:22-01:23 1 7 0 1 8 188
18-11-1999 01:23-01:24 1 5 0 0 5 193
18-11-1999 01:24-01:25 1 3 0 1 4 197
18-11-1999 01:25-01:26 1 10 0 0 10 207
18-11-1999 01:26-01:27 1 11 0 0 11 218
18-11-1999 01:27-01:28 1 8 0 0 8 226
18-11-1999 01:28-01:29 1 9 0 0 9 235
18-11-1999 01:29-01:30 1 7 0 0 7 242
18-11-1999 01:30-01:31 1 6 0 1 7 249
18-11-1999 01:31-01:32 1 13 0 0 13 262
18-11-1999 01:32-01:33 1 8 0 0 8 270
18-11-1999 01:33-01:34 1 15 0 0 15 285
18-11-1999 01:34-01:35 1 10 0 0 10 295
18-11-1999 01:35-01:37 2 19 0 1 20 315 Missed one beep of LANMA's watchà
18-11-1999 01:37-01:38 1 10 0 0 10 325
18-11-1999 01:38-01:39 1 12 0 0 12 337
18-11-1999 01:39-01:40 1 10 0 0 10 347
18-11-1999 01:40-01:41 1 13 0 1 14 361
18-11-1999 01:41-01:42 1 8 0 1 9 370
18-11-1999 01:42-01:43 0 0 0 0 0 370 6,5Pause for counting stars, not shooting starsà
18-11-1999 01:43-01:44 1 11 0 1 12 382
18-11-1999 01:44-01:45 1 17 0 0 17 399
18-11-1999 01:45-01:46 1 20 0 0 20 419
18-11-1999 01:46-01:47 1 15 0 0 15 434
18-11-1999 01:47-01:48 1 15 0 1 16 450
18-11-1999 01:48-01:49 1 26 0 0 26 476
18-11-1999 01:49-01:50 1 16 0 0 16 492 Changing observing method: just counting, no magnitudes!
18-11-1999 01:50-01:51 1 25 0 0 25 517
18-11-1999 01:51-01:52 1 18 0 0 18 535
18-11-1999 01:52-01:53 1 23 0 0 23 558
18-11-1999 01:53-01:54 1 20 0 1 21 579
18-11-1999 01:54-01:55 1 27 0 0 27 606
18-11-1999 01:55-01:56 1 28 0 0 28 634
18-11-1999 01:56-01:57 1 30 0 0 30 664 ~6 Leonid just under Ursae Major!
18-11-1999 01:57-01:58 1 32 1 0 33 697
18-11-1999 01:58-01:59 1 32 0 0 32 729
18-11-1999 01:59-02:00 1 47 0 0 47 776
18-11-1999 02:00-02:01 1 31 0 0 31 807
18-11-1999 02:01-02:02 1 28 0 0 28 835
18-11-1999 02:02-02:03 1 41 0 0 41 876
18-11-1999 02:03-02:04 1 38 0 0 38 914
18-11-1999 02:04-02:05 1 30 0 0 30 944
18-11-1999 02:05-02:06 1 31 0 0 31 975
18-11-1999 02:06-02:07 0 0 0 0 0 975 6,6
18-11-1999 02:07-02:08 1 33 0 0 33 1008
18-11-1999 02:08-02:09 1 31 0 0 31 1039
18-11-1999 02:09-02:10 1 35 0 0 35 1074
18-11-1999 02:10-02:12 2 56 0 0 56 1130
18-11-1999 02:12-02:13 1 35 0 0 35 1165
18-11-1999 02:13-02:14 1 32 0 0 32 1197
18-11-1999 02:14-02:18 0 0 0 0 0 1197 Pause, problem with recorder!
18-11-1999 02:18-02:19 1 21 0 0 21 1218
18-11-1999 02:19-02:20 1 23 0 0 23 1241
18-11-1999 02:20-02:21 1 22 0 0 22 1263
18-11-1999 02:21-02:22 1 24 0 0 24 1287
18-11-1999 02:22-02:23 1 28 0 0 28 1315 ~4 Leonid in Virgo
18-11-1999 02:23-02:24 1 23 0 0 23 1338
18-11-1999 02:24-02:25 1 20 0 0 20 1358
18-11-1999 02:25-02:26 1 16 0 0 16 1374
18-11-1999 02:26-02:27 1 14 0 0 14 1388
18-11-1999 02:27-02:28 1 19 0 1 20 1408
18-11-1999 02:28-02:29 1 26 0 0 26 1434
18-11-1999 02:29-02:30 1 14 0 0 14 1448
18-11-1999 02:30-02:31 1 16 0 0 16 1464 ~4 Leonid
18-11-1999 02:31-02:32 1 18 0 0 18 1482
18-11-1999 02:32-02:33 1 18 0 0 18 1500
18-11-1999 02:33-02:34 1 17 0 0 17 1517
18-11-1999 02:34-02:35 1 19 0 0 19 1536
18-11-1999 02:35:02:36 1 17 0 0 17 1553
18-11-1999 02:36-02:37 1 21 0 0 21 1574
18-11-1999 02:37-02:38 1 13 0 0 13 1587
18-11-1999 02:38-02:39 1 16 0 1 17 1604
18-11-1999 02:39-02:40 1 15 1 0 16 1620
18-11-1999 02:40-02:41 1 12 0 0 12 1632
18-11-1999 02:41-02:42 1 16 0 1 17 1649 ~3 Leonid
18-11-1999 02:42-02:43 1 10 0 1 11 1660
18-11-1999 02:43-02:44 0 0 0 0 0 1660 6,6Pause, counting stars.
18-11-1999 02:44:02:45 1 15 0 0 15 1675 Changing observing method: magnitudes, stream(s)
18-11-1999 02:45-02:46 1 16 0 0 16 1691 ~4 Leonid near Denebola, time 2:44:57 UT
18-11-1999 02:46-02:47 1 10 0 1 11 1702
18-11-1999 02:47-02:48 1 9 0 0 9 1711
18-11-1999 02:48-02:49 1 15 0 2 17 1728 ~3 Leonid
18-11-1999 02:49-02:50 1 13 0 0 13 1741
18-11-1999 02:50-02:51 1 14 0 1 15 1756
18-11-1999 02:51-02:52 1 11 0 0 11 1767
18-11-1999 02:52-02:53 1 8 0 1 9 1776
18-11-1999 02:53-02:54 1 11 0 0 11 1787
18-11-1999 02:54-02:55 1 10 0 1 11 1798
18-11-1999 02:55-02:56 1 5 0 1 6 1804
18-11-1999 02:56-02:57 1 6 0 1 7 1811
18-11-1999 02:57-02:58 1 8 0 0 8 1819
18-11-1999 02:58-02:59 1 6 0 0 6 1825
18-11-1999 02:59-03:00 1 4 0 1 5 1830
18-11-1999 03:00-03:01 1 13 0 0 13 1843 5 Leonids within one second!
18-11-1999 03:01-03:02 1 4 0 1 5 1848
18-11-1999 03:02-03:03 1 5 0 0 5 1853
18-11-1999 03:03-03:04 1 9 0 0 9 1862
18-11-1999 03:04-03:05 1 4 0 1 5 1867
18-11-1999 03:05-03:06 1 5 0 1 6 1873
18-11-1999 03:06-03:07 1 3 0 0 3 1876
18-11-1999 03:07-03:08 1 9 0 0 9 1885
18-11-1999 03:08-03:09 1 4 0 0 4 1889
18-11-1999 03:09-03:10 1 9 0 0 9 1898
18-11-1999 03:10-03:11 1 6 0 0 6 1904
18-11-1999 03:11-03:12 1 6 0 1 7 1911
18-11-1999 03:12-03:13 1 5 0 0 5 1916
18-11-1999 03:13-03:14 1 6 1 0 7 1923
18-11-1999 03:14-03:15 1 5 0 0 5 1928
18-11-1999 03:15-03:16 1 9 0 0 9 1937
18-11-1999 03:16-03:17 1 5 0 0 5 1942
18-11-1999 03:17-03:18 1 8 0 0 8 1950
18-11-1999 03:18-03:19 1 11 0 0 11 1961
18-11-1999 03:19-03:20 1 5 0 0 5 1966 6,6
18-11-1999 03:20-03:21 1 5 0 0 5 1971
18-11-1999 03:21-03:22 1 6 0 1 7 1978
18-11-1999 03:22-03:23 1 7 0 0 7 1985
18-11-1999 03:23-03:24 1 7 0 0 7 1992
18-11-1999 03:24-03:25 1 4 0 0 4 1996
18-11-1999 03:25-03:26 1 5 0 0 5 2001
18-11-1999 03:26-03:27 1 5 0 0 5 2006
18-11-1999 03:27-03:28 1 3 0 1 4 2010
18-11-1999 03:28-03:29 1 3 0 0 3 2013
18-11-1999 03:29-03:33 4 15 1 1 17 2030
18-11-1999 03:33-03:34 1 3 0 0 3 2033
18-11-1999 03:34-03:35 1 3 0 0 3 2036
18-11-1999 03:35-03:36 1 4 0 1 5 2041
18-11-1999 03:36-03:37 1 4 0 0 4 2045
18-11-1999 03:37-03:38 1 2 0 0 2 2047
18-11-1999 03:38-03:39 1 3 0 0 3 2050
18-11-1999 03:39-03:40 1 2 1 1 4 2054
18-11-1999 03:40-03:41 1 4 0 0 4 2058
18-11-1999 03:41-03:42 1 2 0 0 2 2060
18-11-1999 03:42-03:43 1 5 0 0 5 2065
18-11-1999 03:43-03:44 1 2 0 1 3 2068
18-11-1999 03:44-03:45 1 2 0 0 2 2070
18-11-1999 03:45-03:46 1 2 0 0 2 2072
18-11-1999 03:46-03:47 1 3 0 0 3 2075
18-11-1999 03:47-03:48 1 2 0 0 2 2077
18-11-1999 03:48-03:49 1 5 0 2 7 2084
18-11-1999 03:49-03:50 1 3 0 0 3 2087
18-11-1999 03:50-03:51 1 2 0 0 2 2089
18-11-1999 03:51-03:52 0 0 0 0 0 2089 Pause
18-11-1999 03:52-03:53 1 3 0 1 4 2093
18-11-1999 03:53-03:54 1 4 0 0 4 2097
18-11-1999 03:54-03:55 1 2 0 0 2 2099
18-11-1999 03:55-03:56 1 5 0 2 7 2106
18-11-1999 03:56-03:57 1 3 0 1 4 2110
18-11-1999 03:57-03:58 1 2 0 0 2 2112
18-11-1999 03:58-03:59 1 3 0 0 3 2115
18-11-1999 03:59-04:00 1 4 0 0 4 2119
18-11-1999 04:00-04:01 1 2 0 0 2 2121
18-11-1999 04:01-04:02 1 3 0 0 3 2124
18-11-1999 04:02-04:03 1 3 0 0 3 2127
18-11-1999 04:03-04:04 1 2 0 1 3 2130
18-11-1999 04:04-04:05 1 6 0 0 6 2136
18-11-1999 04:05-04:06 1 2 0 0 2 2138
18-11-1999 04:06-04:07 1 1 0 0 1 2139
18-11-1999 04:07-04:08 1 2 0 0 2 2141
18-11-1999 04:08-04:09 1 3 0 1 4 2145
18-11-1999 04:09-04:10 1 2 0 0 2 2147
18-11-1999 04:10-04:11 1 1 0 0 1 2148
18-11-1999 04:11-04:12 1 2 0 1 3 2151
18-11-1999 04:12-04:13 1 2 0 0 2 2153
18-11-1999 04:13-04:14 1 3 0 0 3 2156
18-11-1999 04:14-04:20 0 0 0 0 0 2156 6,5Pause
18-11-1999 04:20-04:22 2 5 0 1 6 2162
18-11-1999 04:22-04:38 0 0 0 0 0 2162 6,5Pause
18-11-1999 04:38-04:46 8 11 1 1 13 2175
18-11-1999 04:46-04:52 6 4 0 1 5 2180
18-11-1999 04:52-04:55 3 4 0 1 5 2185
18-11-1999 04:55-04:57 2 5 0 1 6 2191
18-11-1999 04:57-05:01 4 7 0 1 8 2199
18-11-1999 05:15-05:17 2 3 0 1 4 2203
18-11-1999 23:00-05:17 328 2116 10 77 2203 2203
Hello all,
I finally have my data of the November 17-18 Leonid storm ready. Below, I will give a table with raw data, and:
a PRELIMINARY ZHR curve from my data for the period 1:05-4:14 UT. Reduction procedure can be found in Peter Jenniskens paper in A&A 295 (1995), 206; and in my paper in Meteoritics & Planetary Science 34 (1999), 137. I used gamma=1.4 in radiant altitude correction, r=3.5 (as resulting from my mag. estimates: 3.5 +- 0.8. No magnitude data from period 1:49-2:49!!) in limiting magnitude correction, and my Cp is 1.4. ZHR's are only given for radiant elevations above 20 degrees.
A fit to the ascending and descending branches gives a maximum at 2:03 UT with a maximum activity equivalent to a ZHR of about 3200. Indeed, this is where I have my highest count (39 Leonids in one minute at 2:03 UT, Lm +6.6; this one minute count taken face value provides a ZHR of 3587 +- 575). With an uncertainty of only a few minutes, David and Rob's peak prediction thus was correct. They only need to adjust your activity level prediction model slightly!
The slopes of the peak are well defined, symmetric and suggest B=20 (see above papers). After 3:00 UT with ZHR's below 200, there is some indication of a background taking over.
- Marco Langbroek
Dutch Meteor Society (DMS)
table below; given are:
- time midst (UTC)
- effective time of interval in minutes
- number of Leonids
- ZHR ( - : ZHR not calculated, radiant below 20 degrees)
obs: Marco Langbroek LANMA
date: November 17-18, 1999
loc.: Xaló, Spain, 38d 43' 37" N, 00d 01' 30" E
-----------------------------------------
UT min Nleo eZHR
23:58 45 9 -
00:33 20 14 -
00:58 13 17 -
01:10 9 34 640 +- 110
01:22 12 71 847 +- 100
01:33 10 68 761 +- 92
01:46 8 130 1736 +- 152
01:56 9 232 2468 +- 162
02:07 8 248 2815 +- 179
02:22 7 167 1845 +- 143
02:32 7 115 1191 +- 111
02:38 6 77 928 +- 106
02:53 10 82 533 +- 59
03:03 5 39 512 +- 82
03:11 9 53 305 +- 42
03:23 5 21 251 +- 55
03:38 10 35 185 +- 31
03:46 6 18 155 +- 31
04:05 6 14 115 +- 31
04:11 6 13 105 +- 29
-----------------------------------------
note: when plotted in a diagram with the ZHR axis logarithmic,
the activity profile has a nice well defined shape! See also
the A&A paper mentioned earlier.
table: magnitude data (number of Leonids per magnitude class)
---------------------------------------------------------------
-3 -2 -1 0 +1 +2 +3 +4 +5 +6
23:35-01:49 UT 1 2 8 4 17 51 102 89 41 20
02:49-04:14 UT 0 0 5 6 11 45 80 70 38 5
TOTAL 1 2 13 10 28 96 182 159 79 25
--------------------------------------------------------------
leo99marc8.wav (150 kB)
|
1. Arnold Tukkers: Table 2. Arnold Tukkers: Graphs 3. Rita Verhoef: Table 4. Rita Verhoef: Graphs 5. Jos Nijland: Table 6. Jos Nijland: Graphs |
Results of the Dutch Meteor Society Leonid Campain '99
Date : 17-18 november 1999
Observer : Arnold Tukkers (ATL)
Place : Dos Aguas - Spain (near Valencia)
Direction: south - east 60ø
Start : 21.45 UT
End : 03.15 UT
T.eff : 4h.47m
Tot. meteors: 1338 (1287 Leonids)
Time (UT) LEO TAU AMO SPO T.eff Ntot. LM
21.45 - 22.00 6 15min. 6
22.00 - 22.15 1 6 15m 7
22.15 - 22.30 3 15m 3 5.5
22.30 - 22.45 2 4 15m 6
22.45 - 23.00 4 15m 4
23.00 - 23.15 5 15m 5
23.15 - 23.30 0m
23.30 - 23.45 0m
23.45 - 00.00 1 1 1 15m 3
00.00 - 00.15 4 4 15m 8
00.15 - 00.30 5 6 15m 11
00.30 - 00.45 12 1 4 15m 17
00.45 - 00.50 6 1 3 15m 10
00.50 - 00.55 5 1 5m 6
00.55 - 01.00 5 1 5m 6
01.00 - 01.05 10 1 1 5m 12
01.05 - 01.10 16 1 5m 17
01.10 - 01.15 20 1 5m 21
01.15 - 01.16 3 1min. 3
01.16 3 1min. 3
01.17 1 1 " 2
01.18 5 " 5
01.19 7 " 7
01.20 4 " 4
01.21 5 Tau, Amo and sporadic meteors"5
01.22 10 lost in the Leonids! " 10
01.23 7 " 7
01.24 4 " 4
01.25 8 " 8
01.26 11 " 11 6.2
01.27 11 " 11
01.28 13 " 13
01.29 8 " 8
01.30 11 " 11
________________________________________________
Total 195 6 1 52 254
Time (UT) LEO TAU AMO SPO T.eff Ntot. LM
01.31 7 1min. 7
01.32 7 " 7
01.33 11 " 11
01.34 10 " 10
01.35 10 1 " 11
01.36 11 " 11
01.37 8 " 8
01.38 10 " 10
01.39 11 " 11
01.40 6 " 6
01.41 10 " 10
01.42 12 1min.12
01.43 11 " 11
01.44 21 " 21
01.45 14 " 14
01.46 new tape 0 0
01.47 16 1min.16
01.48 15 " 15
01.49 13 " 13
01.50 11 " 11
01.51 12 1 " 13
01.52 17 " 17
01.53 18 " 18
01.54 23 " 23
01.55 19 " 19
01.56 24 " 24
01.57 20 " 20
01.58 20 " 20
01.59 26 " 26
02.00 20 " 20
02.01 21 1min.21
02.02 26 " 26
02.03 24 " 24
02.04 31 " 31
02.05 25 " 25
02.06 22 " 22
02.07 16 " 16
02.08 19 " 19
02.09 25 " 25
02.10 29 " 29
______________________________________________
Total 651 2 653
Time (UT) LEO TAU AMO SPO T.eff Ntot. LM
02.11 21 1min.21
02.12 15 " 15
02.13 20 " 20
02.14 26 " 26
02.15 15 " 15 6.2
02.16 16 " 16
02.17 19 " 19
02.18 18 " 18
02.19 13 " 13
02.20 14 " 14
02.21 11 " 11
02.22 9 " 9
02.23 9 1min. 9
02.24 15 " 15
02.25 11 " 11
02.26 new tape 0 0
02.27 12 1min.12
02.28 14 " 14
02.29 15 " 15
02.30 10 " 10
02.31 10 " 10
02.32 7 " 7
02.33 6 " 6
02.34 9 " 9
02.35 8 " 8
02.36 3 " 3
02.37 8 " 8
02.38 6 " 6
02.39 5 " 5
02.40 9 " 9
02.41 5 " 5
02.42 4 1min. 4
02.43 6 " 6
02.44 7 " 7
02.45 break 0 0
02.55 - 03.00 11 5min.11
03.00 - 03.05 11 " 11
03.05 - 03.10 18 " 18
03.10 - 03.15 15 " 15
______________________________________________
Total 431 431
LEO = Leonid
TAU = Taurid
AMO = Alpha Monocerotid
SPO = Sporadic
T.eff = Time effective
Ntot. = Total of meteors seen in that time
LM = Limitit magnitude
Date : 16-17 november 1999
Observer : Arnold Tukkers (ATL)
Place : Thezan des Corbieres (France)
Direction: south - east 60ø
Start : 23.15 UT
End : 01.45 UT
T.eff : 2
Tot. meteors: 45
Time (UT) LEO TAU AMO SPO T.eff Ntot. LM
23.15 - 23.30 7 15min. 7 6.1
23.30 - 23.45 1 3 15min. 4 6.1
23.45 - 00.00 1 1 15min. 2 6.1
00.00 - 00.15 1 6 15min. 7 6.1
00.15 - 00.30 break clouds
00.30 - 00.45 break clouds
00.45 - 01.00 1 3 15min. 4 6.1
01.00 - 01.15 1 1 2 6 15min. 10 6.1
01.15 - 01.30 5 15min. 5 6.1
01.30 - 01.45 1 5 15min. 6 6.1
_________________________________________________
Total 1 6 2 36 2 45
Magnitude distribution
Stream -1 0 1 2 3 4 5 6 N Mag.
_________________________________________________
LEO 1 1 2
SPOR 1 10 14 9 2 36 4
AMO 1 1 2 3.5
TAU 1 1 2 2 6 2.1
Results of the Dutch Meteor Society Leonid Campain 1999. Date 16/17 -11-1999 Observer: Rita Verhoef. Place: Thezan des Corbieres (France) Direction: east 70 degrees. Start: 23.15h UT End: 01.10h UT T.eff.: 1.63 Tot. meteors: 47 Time (UT) T.eff. Lm LEO TAU AMO SPO Ntot 23.15h-23.45h 0.5 6.0 2 8 10 23.45h-00.13h 0.46 5.8 1 5 10 16 00.13h-00.30h break cloudy 00.30h-01.00h 0.5 6.2 1 3 2 10 16 01.00h-01.10h 0.17 5.6 2 3 5 total 4 10 2 31 47 Magnitude distribution stream 0 1 2 3 4 5 6 LEO - 1 1 - 1 1 - TAU 1 1 1 5 2 - SPO 1 1 1 6 13 9 5 AMO - - 2 - - - - total 2 3 5 11 16 10 5 Date: 17/18 -11-1999 Observer: Rita Verhoef Place: Dos Aguas (Spain) Direction: east 70 degrees Start: 22.00h UT End: 03.15h UT T.eff.: 5.06 Total Meteors: 1593 Time (UT) t.eff. LM LEO TAU SPO Ntot 22.00-22.15 15min. 5.8 - - 6 6 22.15-22.30 15m 6.1 - 1 5 6 22.30-22.45 15m 6.1 - 5 8 13 22.45-23.00 15m 6.1 1 - 3 4 23.00-23.15 15m 6.1 1 1 4 6 23.15-23.30 15m 6.1 - - 3 3 23.30-23.45 15m 6.1 1 - 4 5 23.45-00.00 15m 6.1 4 - 3 7 00.15-00.30 15m 6.1 8 1 5 14 00.30-00.45 15m 6.1 12 - 2 14 00.45-00.50 5m 6.2 4 3 1 8 00.50-00.55 5m 3 - - 3 00.55-01.00 5m 8 - - 8 01.00-01.05 5m 6 1 1 8 01.05-01.10 5m 6.2 20 1 1 22 01.10-01.15 5m 26 1 2 29 01.15-01.16 1m 2 - - 2 01.16-01.17 1m 2 - - 2 01.17-01.18 1m 4 - 1 5 01.18-01.19 1m 7 - - 7 01.19-01.20 1m 1 - - 1 01.20 1m 7 - - 7 01.21 1m 3 1 - 4 01.22 1m 7 - - 7 01.23 1m 7 - 1 8 01.24 1m 1 - - 1 01.25 1m 2 - - 2 01.26 1m 8 - - 8 01.27 1m 17 - 3 20 01.28 1m 13 - - 13 01.29 1m 9 - - 9 01.30 1m 6 - - 6 01.31 1m 15 - 1 16 01.32 1m 10 - - 10 01.33 1m 4 - - 4 01.34 1m 10 - - 10 01.35 1m 13 - - 13 01.36 1m 3 - - 3 01.37 1m 10 - 1 11 01.38 1m 7 - - 7 01.39 1m 10 - - 10 01.40 1m 9 - - 9 01.41 1m 10 - - 10 01.42 1m 8 - - 8 01.43 1m 15 - - 15 01.44 1m 16 - - 16 01.45 1m 14 - - 14 01.46 1m 16 - - 16 01.47 1m 19 - - 19 01.48 1m 11 - - 11 01.49 1m 19 - - 19 01.50 1m 4 - - 4 01.51 1m 28 - - 28 01.52 1m 25 - - 25 01.53 1m 21 - - 21 01.54 1m 33 - - 33 01.55 1m 25 - - 25 01.56 1m 30 - - 30 01.57 1m 28 - - 28 01.58 1m 28 - - 28 01.59 1m 39 - - 39 02.00 1m 33 - - 33 02.01 1m 30 - 1 31 02.02 1m 44 - - 44 02.03 1m 32 - - 32 02.04 1m 24 - - 24 02.05 1m 29 - - 29 02.06 1m 31 - - 31 02.07 1m 25 - - 25 02.08 1m 32 - - 32 02.09 1m 26 - 1 27 02.10 break 02.11 1m 31 - - 31 02.12 1m 35 - - 35 02.13-02.15 new tape 02.15 1m 30 - - 30 02.16 1m 33 - 1 34 02.17-02.19 break 02.19 1m 25 - - 25 02.20 1m 20 - - 20 02.21 1m 17 - - 17 02.22-02.27 break 6.4 02.27 1m 22 - - 22 02.28 1m 21 - - 21 02.29 1m 18 - - 18 02.30 1m 12 - - 12 02.31 1m 8 - - 8 02.32 1m 10 - - 10 02.33 1m 8 - - 8 02.34 1m 13 - 1 14 02.35 1m 15 - - 15 02.36 1m 7 - - 7 02.37 1m 8 - - 8 02.38 1m 13 - - 13 02.39 1m 7 - - 7 02.40 1m 9 - 1 10 02.41 1m 11 - 1 12 02.42 1m 4 - - 4 02.43 1m 7 - 1 8 02.44 1m 9 - - 9 02.45 1m 7 - - 7 02.46-02.49 break 02.49 1m 10 - - 10 02.50 1m 9 - 1 10 02.51 1m 7 - - 7 02.52 1m 6 - - 6 02.53 1m 6 - - 6 02.54 1m 6 - - 6 02.55 1m 6 - 1 7 02.56 1m 7 - - 7 02.57 1m 8 - - 8 02.58 1m 6 - - 6 02.59 1m 5 - - 5 03.00 5m 6.1 19 - - 19 03.05 5m 21 - 2 23 03.10 5m 20 - - 20 03.15 END total 1512 15 66 1593
Results of the Dutch Meteor Society Leonid Campain '99
Date : 17-18 november 1999
Observer : Jos Nijland (JNB)
Place : Dos Aguas - Spain (near Valencia)
Direction: south - east 60ø
Start : 22:00 UT
End : 03:05 UT
T.eff : 4h12m
Tot. meteors: 1370 (1305 Leonids)
Magnitudedistribution of Leonids only
Interval (UT) Teff Lm Leo Tau Spo -4 -3 -2 -1 0 1 2 3 4 5 6 N Ntot
22.00-22.55 0,92 6,10 0 3 7 0 0
23.05-23.35 0,50 6,20 2 1 10 1 1 2 2
23.58-00.30 0,53 6,20 13 0 9 1 4 4 2 2 13 15
00.30-00.45 0,25 6,30 12 1 5 2 6 1 3 12 27
00.45-00.50 0,08 6,30 7 3 2 1 2 1 1 2 7 34
00.50-00.55 0,08 6,30 11 0 0 1 1 2 5 2 11 45
00.55-01.00 0,08 6,30 6 1 1 2 2 1 1 6 51
01.00-01.05 0,08 6,30 12 1 1 1 1 1 4 1 3 1 12 63
01.05-01.10 0,08 6,30 24 0 1 1 2 5 5 6 4 1 24 87
01.10-01.15 0,08 6,30 29 1 1 1 2 2 5 9 8 2 29 116
01.15-01.16 0,02 6,30 2 0 1 2 2 118
01.16-01.17 0,02 6,30 1 0 1 1 1 119
01.17-01.18 0,02 6,30 5 0 0 1 2 1 1 5 124
01.18-01.19 0,02 6,30 8 0 0 2 1 2 3 8 132
01.19-01.20 0,02 6,30 3 0 2 1 1 1 3 135
01.20-01.21 0,02 6,30 6 0 0 1 1 2 1 1 6 141
01.21-01.22 0,02 6,30 8 0 0 1 3 3 1 8 149
01.22-01.23 0,02 6,30 7 0 1 1 1 4 1 7 156
01.23-01.24 0,02 6,30 9 0 1 2 2 1 4 9 165
01.24-01.25 0,02 6,30 8 0 0 1 3 3 1 8 173
01.25-01.26 0,02 6,30 9 0 0 1 4 2 2 9 182
01.26-01.27 0,02 6,30 12 0 0 1 1 2 2 5 1 12 194
01.27-01.28 0,02 6,30 14 0 0 2 1 4 6 1 14 208
01.28-01.29 0,02 6,30 11 0 1 1 1 2 2 5 11 219
01.29-01.30 0,02 6,30 4 0 0 1 2 1 4 223
01.30-01.31 0,02 6,30 6 0 0 1 1 1 2 1 6 229
01.31-01.32 0,02 6,30 9 0 0 2 3 4 9 238
01.32-01.33 0,02 6,30 12 0 0 1 1 2 4 3 1 12 250
01.33-01.34 0,02 6,30 3 0 0 1 1 1 3 253
01.34-01.35 0,02 6,30 9 0 0 1 1 2 2 3 9 262
01.35-01.36 0,02 6,30 8 0 0 1 1 1 1 2 2 8 270
01.36-01.37 0,02 6,30 7 1 0 1 2 1 1 2 7 277
01.37-01.38 0,02 6,30 10 0 0 3 2 4 1 10 287
01.38-01.39 0,02 6,30 15 0 0 1 1 2 3 7 1 15 302
01.39-01.40 0,02 6,30 6 1 0 2 1 1 1 1 6 308
01.40-01.41 0,02 6,30 8 0 2 1 3 2 2 8 316
01.41-01.42 0,02 6,30 11 0 0 1 2 4 4 11 327
01.42-01.43 0,02 6,30 11 0 0 2 4 2 2 1 11 338
01.43-01.44 0,02 6,30 19 0 0 1 3 7 7 1 19 357
01.44-01.45 0,02 6,30 26 0 0 1 1 1 4 5 8 6 26 383
01.45-01.46 0,02 6,40 11 0 1 2 6 3 11 394
01.46-01.47 0,02 6,40 22 0 0 1 2 2 5 9 3 22 416
01.47-01.48 0,02 6,40 18 0 0 1 3 8 6 18 434
01.49-01.50 0,02 6,40 17 0 0 1 1 2 6 3 4 17 451
01.50-01.51 0,02 6,40 16 0 0 2 2 5 5 2 16 467
01.51-01.52 0,02 6,40 20 0 1 2 5 3 8 2 20 487
01.52-01.53 0,02 6,40 26 0 0 1 5 5 12 3 26 513
01.53-01.54 0,02 6,40 11 0 0 1 2 6 2 11 524
01.54-01.55 0,02 6,40 26 26 550
01.55-01.56 0,02 6,40 19 19 569
01.56-01.57 0,02 6,40 16 16 585
01.57-01.58 0,02 6,40 20 20 605
02.01-02.02 0,02 6,40 34 34 639
02.02-02.03 0,02 6,40 42 42 681
02.05-02.06 0,02 6,40 31 31 712
02.06-02.07 0,02 6,40 41 41 753
02.08-02.09 0,02 6,40 37 37 790
02.09.30-02.10 0,01 6,40 27 !! 30 seconds !! 27 817
02.11-02.12 0,02 6,40 31 31 848
02.13-02.14 0,02 6,40 28 28 876
02.14-02.15 0,02 6,40 33 33 909
02.18-02.19 0,02 6,40 22 22 931
02.19-02.20 0,02 6,40 17 17 948
02.20-02.21 0,02 6,40 14 14 962
02.21-02.22 0,02 6,40 19 19 981
02.22-02.23 0,02 6,40 10 0 0 1 1 1 3 3 1 10 991
02.23-02.24 0,02 6,40 15 0 0 1 1 4 3 5 1 15 1006
02.24-02.25 0,02 6,40 18 0 0 1 4 6 7 18 1024
02.25-02.26 0,02 6,40 15 0 0 1 1 4 7 2 15 1039
02.26-02.27 0,02 6,40 11 0 0 3 3 5 11 1050
02.27-02.28 0,02 6,40 16 0 0 1 8 6 1 16 1066
02.28-02.29 0,02 6,40 22 0 0 1 4 5 11 1 22 1088
02.29-02.30 0,02 6,40 14 0 2 1 4 7 2 14 1102
02.30-02.31 0,02 6,40 16 0 0 1 1 6 8 16 1118
02.31-02.32 0,02 6,40 12 0 0 1 3 3 3 2 12 1130
02.32-02.33 0,02 6,40 6 0 0 1 1 3 1 6 1136
02.33-02.34 0,02 6,40 9 0 0 1 3 3 2 9 1145
02.34-02.35 0,02 6,40 11 0 0 1 2 5 2 1 11 1156
02.35-02.36 0,02 6,40 10 0 0 1 2 3 3 1 10 1166
02.36-02.37 0,02 6,40 10 0 0 1 1 3 2 3 10 1176
02.37-02.38 0,02 6,40 11 0 0 3 4 3 1 11 1187
02.38-02.39 0,02 6,40 9 0 0 3 2 3 1 9 1196
02.39-02.40 0,02 6,40 10 0 0 1 1 2 1 2 3 10 1206
02.40-02.41 0,02 6,40 9 0 1 1 1 3 3 1 9 1215
02.41-02.42 0,02 6,40 6 0 0 2 1 1 2 6 1221
02.42-02.43 0,02 6,40 7 0 0 1 3 3 7 1228
02.43-02.44 0,02 6,40 6 0 0 1 1 2 2 6 1234
02.44-02.45 0,02 6,40 8 0 0 2 2 1 2 1 8 1242
02.49-02.50 0,02 6,40 9 0 0 2 1 6 9 1251
02.51-02.52 0,02 6,40 3 0 0 2 1 3 1254
02.52-02.53 0,02 6,40 4 0 0 1 1 2 4 1258
02.53-02.54 0,02 6,40 9 0 0 1 3 1 4 9 1267
02.54-02.55 0,02 6,40 6 0 1 1 2 3 6 1273
02.55-02.58 0,05 6,40 12 0 0 1 1 3 4 3 12 1285
02.58-03.00 0,03 6,40 8 0 0 1 1 3 3 8 1293
03.00-03.05 0,08 6,40 12 0 0 7 3 2 12 1305
Total 4,20 6,25 1305 13 52
