Leonids 2009: visual data quicklook

Introduction

This page shows automated results of the Leonids 2009, based on visual observations by volunteers astronomers collected through the report form of the International Meteor Organization (IMO). The information on this page is generated fully automatically; for scientific use please refer to manual analyses published in scientific journals (such as WGN). Send your feedback regarding this page to Geert Barentsen.

Page contents:

Immy Activity profile
Immy 17-18 November in detail (NEW)
Immy Observer statistics
Immy Data access
Immy Credits and references

Page generated: 2010 April 19 at 14:55 UTC.

Activity profile

The graph below shows the ZHR (Zenithal Hourly Rate), which is the number of meteors an observer would see under a very dark sky with the radiant of the shower in zenith.
ZHRmax = 79 based on 4419 Leonids reported in 1222 intervals, assuming population index r = 1.9

ZHR graph

Time (UTC)Solarlon nINT nLEO ZHR Number density
2009-11-13 02:27 230.706 5 4 4±2 2 / 109·km3
2009-11-14 02:16 231.705 12 32 5±1 3 / 109·km3
2009-11-15 01:19 232.673 13 31 7±1 4 / 109·km3
2009-11-15 23:54 233.621 9 20 6±1 4 / 109·km3
2009-11-16 20:28 234.484 41 50 16±2 10 / 109·km3
2009-11-17 03:33 234.782 23 66 21±3 13 / 109·km3
2009-11-17 06:26 234.903 38 67 28±3 17 / 109·km3
2009-11-17 08:32 234.991 24 66 29±4 18 / 109·km3
2009-11-17 09:38 235.037 19 65 30±4 18 / 109·km3
2009-11-17 10:32 235.075 15 70 32±4 19 / 109·km3
2009-11-17 11:39 235.123 20 65 26±3 16 / 109·km3
2009-11-17 16:01 235.306 24 67 31±4 19 / 109·km3
2009-11-17 17:42 235.377 23 69 42±5 25 / 109·km3
2009-11-17 18:23 235.405 18 65 41±5 25 / 109·km3
2009-11-17 19:00 235.431 21 102 58±6 35 / 109·km3
2009-11-17 19:28 235.451 28 127 59±5 36 / 109·km3
2009-11-17 19:59 235.473 43 191 74±5 45 / 109·km3
2009-11-17 20:27 235.492 59 265 79±5 48 / 109·km3
2009-11-17 20:57 235.514 51 192 69±5 42 / 109·km3
2009-11-17 21:27 235.535 53 281 68±4 41 / 109·km3
2009-11-17 21:58 235.556 44 118 40±4 24 / 109·km3
2009-11-17 22:28 235.577 49 121 36±3 22 / 109·km3
2009-11-17 22:57 235.597 49 221 52±3 31 / 109·km3
2009-11-17 23:29 235.620 42 177 37±3 22 / 109·km3
2009-11-17 23:58 235.640 39 137 36±3 22 / 109·km3
2009-11-18 00:29 235.662 35 153 40±3 24 / 109·km3
2009-11-18 00:58 235.682 35 152 41±3 25 / 109·km3
2009-11-18 01:28 235.704 45 195 33±2 20 / 109·km3
2009-11-18 01:58 235.724 41 182 33±2 20 / 109·km3
2009-11-18 02:27 235.744 36 169 33±3 20 / 109·km3
2009-11-18 02:58 235.766 31 129 28±2 17 / 109·km3
2009-11-18 03:29 235.788 25 97 29±3 18 / 109·km3
2009-11-18 03:58 235.809 27 103 29±3 18 / 109·km3
2009-11-18 04:35 235.834 21 65 24±3 15 / 109·km3
2009-11-18 05:29 235.872 13 68 30±4 18 / 109·km3
2009-11-18 09:04 236.022 24 65 19±2 12 / 109·km3
2009-11-18 20:35 236.507 32 66 12±1 7 / 109·km3
2009-11-19 07:54 236.983 15 55 11±1 7 / 109·km3
2009-11-20 02:12 237.753 26 65 6±1 4 / 109·km3
2009-11-20 06:43 237.942 8 34 9±2 5 / 109·km3
2009-11-21 02:23 238.770 20 69 8±1 5 / 109·km3
2009-11-22 01:56 239.761 6 15 5±1 3 / 109·km3
2009-11-22 09:30 240.079 2 2 3±2 2 / 109·km3
2009-11-23 04:44 240.890 2 10 6±2 4 / 109·km3
2009-11-24 05:00 241.911 2 13 6±2 4 / 109·km3
2009-11-25 05:05 242.926 2 9 4±1 2 / 109·km3
2009-11-26 05:06 243.938 2 12 5±1 3 / 109·km3
2009-11-27 03:52 244.898 4 6 2±1 1 / 109·km3
2009-11-28 05:13 245.967 2 10 5±2 3 / 109·km3
2009-11-29 07:53 247.092 4 6 3±1 2 / 109·km3

The reported intervals are automatically added together into the bins shown above, based on the number of meteors and the distribution of the intervals. For each bin, the following parameters are computed:

17-18 November in detail

ZHR graph

Time (UTC)Solarlon nINT nLEO ZHR Number density
2009-11-17 05:20 234.857 32 47 22±3 13 / 109·km3
2009-11-17 07:13 234.937 18 48 37±5 22 / 109·km3
2009-11-17 08:24 234.986 20 53 29±4 18 / 109·km3
2009-11-17 09:16 235.022 14 45 30±4 18 / 109·km3
2009-11-17 09:56 235.050 13 49 30±4 18 / 109·km3
2009-11-17 10:30 235.074 8 47 32±5 19 / 109·km3
2009-11-17 11:04 235.098 14 49 29±4 18 / 109·km3
2009-11-17 12:26 235.156 16 51 21±3 13 / 109·km3
2009-11-17 16:29 235.326 19 47 38±5 23 / 109·km3
2009-11-17 17:29 235.368 16 46 46±7 28 / 109·km3
2009-11-17 17:58 235.388 14 46 48±7 29 / 109·km3
2009-11-17 18:22 235.405 15 46 45±7 27 / 109·km3
2009-11-17 18:48 235.423 9 46 48±7 29 / 109·km3
2009-11-17 19:03 235.434 16 84 65±7 39 / 109·km3
2009-11-17 19:19 235.445 17 72 61±7 37 / 109·km3
2009-11-17 19:35 235.456 11 55 56±7 34 / 109·km3
2009-11-17 19:49 235.465 20 81 74±8 45 / 109·km3
2009-11-17 20:04 235.477 22 105 72±7 44 / 109·km3
2009-11-17 20:19 235.487 36 186 89±7 54 / 109·km3
2009-11-17 20:34 235.497 26 81 66±7 40 / 109·km3
2009-11-17 20:48 235.507 33 132 62±5 38 / 109·km3
2009-11-17 21:04 235.518 25 89 80±8 48 / 109·km3
2009-11-17 21:19 235.529 29 124 68±6 41 / 109·km3
2009-11-17 21:34 235.539 27 184 72±5 44 / 109·km3
2009-11-17 21:49 235.550 23 64 42±5 25 / 109·km3
2009-11-17 22:05 235.561 22 54 39±5 24 / 109·km3
2009-11-17 22:20 235.571 26 71 38±4 23 / 109·km3
2009-11-17 22:35 235.582 23 56 38±5 23 / 109·km3
2009-11-17 22:48 235.591 30 165 57±4 35 / 109·km3
2009-11-17 23:05 235.603 20 57 49±6 30 / 109·km3
2009-11-17 23:18 235.612 21 80 36±4 22 / 109·km3
2009-11-17 23:34 235.623 22 105 45±4 27 / 109·km3
2009-11-17 23:48 235.633 20 66 32±4 19 / 109·km3
2009-11-18 00:04 235.644 22 82 36±4 22 / 109·km3
2009-11-18 00:19 235.655 18 81 38±4 23 / 109·km3
2009-11-18 00:36 235.667 18 71 42±5 25 / 109·km3
2009-11-18 00:50 235.677 19 94 51±5 31 / 109·km3
2009-11-18 01:06 235.688 17 60 32±4 19 / 109·km3
2009-11-18 01:21 235.698 21 83 36±4 22 / 109·km3
2009-11-18 01:35 235.708 24 112 32±3 19 / 109·km3
2009-11-18 01:51 235.719 23 104 36±4 22 / 109·km3
2009-11-18 02:09 235.732 25 125 32±3 19 / 109·km3
2009-11-18 02:23 235.742 15 63 32±4 19 / 109·km3
2009-11-18 02:39 235.753 20 104 35±3 21 / 109·km3
2009-11-18 02:55 235.764 14 46 27±4 16 / 109·km3
2009-11-18 03:11 235.775 16 55 22±3 13 / 109·km3
2009-11-18 03:27 235.786 13 52 30±4 18 / 109·km3
2009-11-18 03:43 235.798 14 54 30±4 18 / 109·km3
2009-11-18 03:58 235.808 15 61 29±4 18 / 109·km3
2009-11-18 04:19 235.823 16 47 23±3 14 / 109·km3
2009-11-18 04:47 235.843 13 48 30±4 18 / 109·km3
2009-11-18 05:13 235.861 8 45 28±4 17 / 109·km3
2009-11-18 07:39 235.963 13 49 26±4 16 / 109·km3
2009-11-18 09:53 236.057 20 46 16±2 10 / 109·km3
2009-11-18 11:20 236.118 4 11 17±5 10 / 109·km3

Observer statistics

Data has been received from 121 observers in 26 countries. Thank you for your efforts!

Spatial distribution of observers

Note: click on the map for an interactive version.

Spatial distribution

Temporal distribution of observers

Temporal distribution

Table of observers

ObserverCountryTeffnLEO
Salvador Aguirre Mexico 7.20h 85
Seishi Akagi Japan 4.09h 127
Plamena Alexandrova Bulgaria 3.72h 46
Ahmad Alhudban Jordan 2.00h 46
Alexandre Amorim Brazil 3.60h 4
Rainer Arlt Germany 2.07h 35
Pierre Bader Germany 5.60h 34
Ivana Belic Serbia 3.32h 41
Jens Briesemeister Germany 4.42h 100
Gennadij Bugarevych Belarus 4.23h 35
Simiao Cheng China 2.57h 53
Tom Corstjens Belgium 1.61h 8
Luigi D'argliano Italy 1.38h 8
Mark Davis United States 3.17h 27
Mayuresh Desai India 11.09h 134
Sietse Dijkstra Netherlands 8.84h 38
Todor Dimitrov Bulgaria 2.66h 62
Aleksandra Djukic Serbia 3.76h 19
Plamena Enikova Bulgaria 2.37h 28
Tomasz Fajfer Poland 3.00h 3
Stela Frencheva Bulgaria 2.15h 38
Christoph Gerber Germany 2.35h 12
Wei Ge China 2.66h 60
Ashwini Ghadigaonkar India 3.31h 10
William Godley United States 1.00h 3
Evgeny Gorbikov Israel 3.10h 47
Shomita Goswami India 1.00h 18
Daniel Gruen Germany 0.80h 1
Shy Halatzi Israel 4.04h 89
Wayne T. Hally United States 9.58h 34
Vilem Heblik Czech Republic 8.73h 64
Jingjing He China 1.26h 77
Carl Hergenrother United States 3.03h 38
Gabriel Hickel Brazil 1.14h 18
Ken Hodonsky United States 6.22h 53
Kamil Hornoch Czech Republic 5.10h 97
David Hostetter United States 1.50h 5
Shan Huang China 1.33h 35
Carl Johannink Netherlands 1.50h 1
Bhargav Joshi India 0.70h 23
Javor Kac Slovenia 7.75h 62
Amiraly Kandymov Ukraine 5.42h 11
Yann Kempf France 1.38h 1
Akshay Khanchane India 2.36h 15
Vaishali Kharat India 1.84h 20
Gyula Kiss Hungary 7.00h 25
Katja Koleva Bulgaria 5.23h 77
Jakub Koukal Czech Republic 24.70h 120
Kenta Kouno Japan 3.34h 94
Sneha Kulkarni India 1.92h 37
Jens Lacorne France 2.18h 7
Peter Van Leuteren Netherlands 4.09h 16
Anna S. Levina Israel 8.39h 114
Mike Linnolt United States 3.04h 39
Yanzhe Liu United States 0.50h 1
Xin Li China 0.58h 16
Yunpeng Li China 1.27h 22
Darshan Lohade Laos 2.08h 19
Douglas Love United States 0.83h 17
Jose Luis Maestre Garcia Spain 1.20h 3
Kouji Maeda Japan 1.25h 26
Vimal Mamania India 4.50h 40
Qiang Ma China 1.33h 59
Adam Marsh Australia 2.00h 20
Grigoris Maravelias Greece 6.93h 132
Pierre Martin Canada 4.85h 100
Mikhail Maslov Russia 1.81h 4
Xiaoyun Ma China 1.50h 42
Vasilis Metallinos Greece 2.66h 72
Koen Miskotte Netherlands 6.95h 12
Abbas Mokhtarzadeh Canada 1.00h 6
Vikrant Narang India 2.97h 78
Sven Nather Germany 16.80h 73
Mohammad Odeh Jordan 3.73h 66
Amitabh Pandey India 1.00h 4
Swapnil Pawar India 2.82h 18
Krzysztof Polakowski Poland 3.00h 1
Mayuresh G. Prabhune India 1.60h 33
Nilesh Puntambekar India 1.00h 3
Ella Ratz Israel 1.96h 29
Jatin Rathod India 1.80h 24
Jurgen Rendtel Germany 32.72h 150
Mikiya Sato Japan 0.50h 25
Branislav Savic Serbia 3.90h 46
Alex Scholten unknown 1.90h 3
Rene Scurbecq Belgium 0.65h 3
Hideki Seo Japan 0.50h 14
Rohan Shewale India 6.41h 96
Magdalena Sieniawska Poland 3.00h 1
Costantino Sigismondi Italy 0.75h 9
Vladimir Sliusarenko Ukraine 5.08h 94
Sergey Stariy Ukraine 0.87h 3
Wesley Stone United States 2.25h 36
Richard Taibi United States 5.61h 23
Khaled Tell Jordan 2.75h 53
Kazumi Terakubo Japan 1.00h 27
Rushikesh Tilak India 1.17h 12
Rafael Ruben Torregrosa Soler Spain 0.55h 2
Josep Trigo Rodriguez Spain 0.98h 22
Pawel Trybus Poland 1.00h 1
Shigeo Uchiyama Japan 3.77h 19
Devdatta Urankar India 2.72h 13
Gayatri Urankar India 3.84h 28
Daniela Urumova Bulgaria 3.06h 62
Hendrik Vandenbruaene Belgium 2.29h 14
Michel Vandeputte Belgium 13.37h 101
Kaustubh Vaste India 1.28h 15
Valentin Velkov Bulgaria 1.03h 23
Daniel Verde Spain 1.00h 7
Daniel Verde Van Ouytsel Spain 3.04h 42
Yuechao Wang China 3.01h 73
William Watson United States 10.23h 57
Thomas Weiland Austria 3.60h 68
Xiaofan Wei China 2.10h 33
Wu Xijun China 1.34h 24
Jiaqing Yang China 3.20h 94
Quanzhi Ye China 2.69h 62
Weizhou Zeng China 2.03h 65
Cong Zhao China 1.10h 4
Nianfeng Zhang China 0.85h 26
Xiang Zhan China 0.70h 35
Hao Zhou China 0.93h 46
Dantong Zhu China 2.72h 57
Przemyslaw Zoladek Poland 3.00h 1

Data access

Create your own analysis. The files below can be opened using Excel:
leo2009_rate.csv (number of meteors per interval per observer)
leo2009_magn.csv (number of meteors per magnitude bin per observer)

Credits and references

The information on this page may be distributed freely provided credit is given to the International Meteor Organization (IMO) and, when possible, to the individual observers. The computer facilities to generate this page are provided by the Urania Public Observatory in Belgium and Armagh Observatory in Northern Ireland.

References:

  1. Rendtel J. and Arlt R., editors (2009). Handbook for meteor observations; Chapter 9, Analyses and Calculations. International Meteor Organization. ISBN 978-2-87355-020-2.
  2. Koschack R., Rendtel J. (1990). Determination of spatial number density and mass index from visual meteor observations (II). WGN 18, 119-140.