- Nov. 16, 1999, From Mokuleia, OAHU, HI (NLM = 6.3) => ZHR=10
UT begin UT end Observation: Azim. Elev. R.A. Dec. Elev.Radiant
12:30 12:45 2 Leonids (m=+5 and +5), 10% obstructed sky 270 50 3h00 +15 +34
12:53 13:08 1 Leonid (m= 0 ), 1% obstructed sky 50 50 9h00 +40 +41
13:30 13:45 2 Leonids (m=+5 and +1), 0% obstructed sky 150 50 7h50 -15 +49
- 9 other meteors during the same time
- Nov. 17, 1999, CSO-Mauna-Kea, Hawaii, HI (NLM = 6.5) => ZHR=29 to 38
UT begin UT end Observation: Azim. Elev. R.A. Dec. Elev.Radiant
13:18 13:33 5 Leonids (m=+6 to +3), 0% obstructed sky. 60 40 10h20 +35 +46
14:18 14:38 11 Leonids (m=+6 to -1), 3% obstructed sky. 180 50 7h50 -20 +60
15:14 15:34 9 Leonids (m=+4 to -2), 5% obstructed sky. 220 50 7h10 -10 +74
- Magnitude distribution of 25 Leonids (ranges: [ m-0.5 - m+0.5]):
brighter than
-3 -2 -1 +0 +1 +2 +3 +4 +5 +6
0 1 3 3 3 3 3 3 2 4
- 13 other meteors at the same time
- Nov. 18, 1999, CSO-Mauna-Kea, Hawaii, HI (NLM = 6.5) => ZHR increasing from 62 to 162
UT begin UT end Observation: Azim. Elev. Elev.Radiant
12:01 12:16 7 Leonids (m=+6 to +1), <3% obstructed sky 50 40 +27
12:47 13:02 15 Leonids (m=+6 to -2), <3% obstructed sky 130 50 +38
13:55 14:10 21 Leonids (m=+6 to -1), <3% obstructed sky 180 50 +56
14:35 14:50 35 Leonids (m=+6 to -2), 0% obstructed sky 220 70 +66
15:21 15:36 39 Leonids (m=+5 to -2), 0% obstructed sky 230 70 +75
15:52 15:57 7 Leonids (m=+3 to -2), Limiting Mag.=3.0 260 50 +79
- Magnitude distribution of 117 Leonids (ranges: [ m-0.5 - m+0.5]):
brighter than
-3 -2 -1 +0 +1 +2 +3 +4 +5 +6
0 4 3 6 14 13 21 22 23 11
- 30 other meteors (sporadics, taurids,...) at the same time
- Nov. 19, 1999, Hale-Pohaku (before 14UT), CSO-Mauna-Kea, Hawaii, HI (NLM = 6.5) => ZHR 15 to 24
UT begin UT end Observation: Azim. Elev. R.A. Dec. Elev.Radiant
11:35 11:50 0 Leonids, Moon up, Limiting Mag.=5.2 160 80 5h40 +0 +23
12:30 12:45 3 Leonids (m=+6 to 0), Limiting Mag.=6.3 150 70 6h30 +5 +35
13:04 13:19 2 Leonids (m=+5 and 4), Limiting Mag.=6.6 180 85 7h20 +20 +44
14:28 14:43 7 Leonids (m=+5 to +1), 0% obstructed sky 10 70 10h +30 +63
14:58 15:13 4 Leonids (m=+6 to +3), 0% obstructed sky 240 70 7h30 +5 +69
- Magnitude distribution of 16 Leonids (ranges: [ m-0.5 - m+0.5]):
brighter than
-3 -2 -1 +0 +1 +2 +3 +4 +5 +6
0 0 0 1 1 1 4 5 2 2
- 25 other meteors (6 taurids) at the same time
(ZHR .ps file)
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Nicolas Biver - 2 Dec. 1999
| UT begin | UT end | Observation: | Azim. | Elev. | R.A. | Dec. | Elev.Radiant |
| 12:30 | 12:45 | 2 Leonids (m=+5 and +5), 10% obstructed sky | 270 | 50 | 3h00 | +15 | +34 |
| 12:53 | 13:08 | 1 Leonid (m= 0 ), 1% obstructed sky | 50 | 50 | 9h00 | +40 | +41 |
| 13:30 | 13:45 | 2 Leonids (m=+5 and +1), 0% obstructed sky | 150 | 50 | 7h50 | -15 | +49 |
| UT begin | UT end | Observation: | Azim. | Elev. | R.A. | Dec. | Elev.Radiant |
| 13:18 | 13:33 | 5 Leonids (m=+6 to +3), 0% obstructed sky. | 60 | 40 | 10h20 | +35 | +46 |
| 14:18 | 14:38 | 11 Leonids (m=+6 to -1), 3% obstructed sky. | 180 | 50 | 7h50 | -20 | +60 |
| 15:14 | 15:34 | 9 Leonids (m=+4 to -2), 5% obstructed sky. | 220 | 50 | 7h10 | -10 | +74 |
| brighter than -3 | -2 | -1 | +0 | +1 | +2 | +3 | +4 | +5 | +6 |
| 0 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 4 |
| UT begin | UT end | Observation: | Azim. | Elev. | Elev.Radiant |
| 12:01 | 12:16 | 7 Leonids (m=+6 to +1), <3% obstructed sky | 50 | 40 | +27 |
| 12:47 | 13:02 | 15 Leonids (m=+6 to -2), <3% obstructed sky | 130 | 50 | +38 |
| 13:55 | 14:10 | 21 Leonids (m=+6 to -1), <3% obstructed sky | 180 | 50 | +56 |
| 14:35 | 14:50 | 35 Leonids (m=+6 to -2), 0% obstructed sky | 220 | 70 | +66 |
| 15:21 | 15:36 | 39 Leonids (m=+5 to -2), 0% obstructed sky | 230 | 70 | +75 |
| 15:52 | 15:57 | 7 Leonids (m=+3 to -2), Limiting Mag.=3.0 | 260 | 50 | +79 |
| brighter than -3 | -2 | -1 | +0 | +1 | +2 | +3 | +4 | +5 | +6 |
| 0 | 4 | 3 | 6 | 14 | 13 | 21 | 22 | 23 | 11 |
| UT begin | UT end | Observation: | Azim. | Elev. | R.A. | Dec. | Elev.Radiant |
| 11:35 | 11:50 | 0 Leonids, Moon up, Limiting Mag.=5.2 | 160 | 80 | 5h40 | +0 | +23 |
| 12:30 | 12:45 | 3 Leonids (m=+6 to 0), Limiting Mag.=6.3 | 150 | 70 | 6h30 | +5 | +35 |
| 13:04 | 13:19 | 2 Leonids (m=+5 and 4), Limiting Mag.=6.6 | 180 | 85 | 7h20 | +20 | +44 |
| 14:28 | 14:43 | 7 Leonids (m=+5 to +1), 0% obstructed sky | 10 | 70 | 10h | +30 | +63 |
| 14:58 | 15:13 | 4 Leonids (m=+6 to +3), 0% obstructed sky | 240 | 70 | 7h30 | +5 | +69 |
| brighter than -3 | -2 | -1 | +0 | +1 | +2 | +3 | +4 | +5 | +6 |
| 0 | 0 | 0 | 1 | 1 | 1 | 4 | 5 | 2 | 2 |
(ZHR .ps file)
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