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Leonids 2012: visual data quicklook

Introduction

This page shows automated results of the Leonids 2012, based on visual observations reported by citizen scientists through the report form of the International Meteor Organization (IMO). The information on this page is generated 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 Observer statistics
Immy Data access
Immy Credits and references

Note that the data will finally go into the Visual Meteor Database (VMDB) with manual inspection and rectifications. We are curretly completing the files of 2008-2011. The VMDB is an enormous project - any help will be greatly appreciated.

Page generated: 2013 August 21 at 21:05 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 = 47 based on 366 Leonids reported in 142 intervals, assuming population index r = 2.5

ZHR graph

Time (UTC)Solarlon nINT nLEO ZHR Particle density
2012-11-12 08:58 230.205 3 8 17±6 33 / 109·km3
2012-11-13 14:32 231.445 4 15 8±2 16 / 109·km3
2012-11-14 05:13 232.061 5 15 8±2 16 / 109·km3
2012-11-15 00:42 232.879 6 15 9±2 18 / 109·km3
2012-11-15 07:14 233.154 3 15 10±2 20 / 109·km3
2012-11-16 00:31 233.880 6 22 15±3 29 / 109·km3
2012-11-17 00:18 234.879 7 16 12±3 24 / 109·km3
2012-11-17 01:34 234.932 6 16 10±2 20 / 109·km3
2012-11-17 02:30 234.971 2 17 12±3 24 / 109·km3
2012-11-17 03:29 235.012 3 15 8±2 16 / 109·km3
2012-11-17 07:17 235.172 3 18 9±2 18 / 109·km3
2012-11-17 16:31 235.560 6 15 22±6 43 / 109·km3
2012-11-17 18:43 235.652 5 15 27±7 53 / 109·km3
2012-11-17 19:37 235.691 7 15 20±5 39 / 109·km3
2012-11-17 20:59 235.748 9 17 23±5 45 / 109·km3
2012-11-17 22:03 235.793 11 17 18±4 35 / 109·km3
2012-11-18 00:23 235.891 5 17 25±6 49 / 109·km3
2012-11-18 01:50 235.952 3 11 24±7 47 / 109·km3
2012-11-20 03:03 238.021 3 1 3±2 6 / 109·km3
2012-11-20 05:31 238.125 7 15 30±8 59 / 109·km3
2012-11-20 06:11 238.153 12 19 47±11 92 / 109·km3
2012-11-20 21:01 238.777 8 15 12±3 24 / 109·km3
2012-11-21 09:23 239.298 6 5 10±4 20 / 109·km3
2012-11-22 05:08 240.129 4 17 7±2 14 / 109·km3
2012-11-23 04:23 241.108 3 7 5±2 10 / 109·km3
2012-11-24 10:52 242.392 2 3 4±2 8 / 109·km3
2012-11-25 16:51 243.655 3 5 3±1 6 / 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:

Observer statistics

Data has been received from 33 observers in 14 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
Geert Barentsen United Kingdom 1.02h 31
Apekshit Bhingardive India 1.50h 4
Simiao Cheng China 2.75h 14
Sihao Cheng China 1.70h 4
Klemen Cotar Slovenia 1.75h 13
Jose Vicente Díaz Martínez Spain 0.50h 1
Ganesh Ghugari India 1.66h 4
Jay Kansara India 0.92h 2
Lin Luo China 0.92h 2
Zameer Manur India 1.57h 12
Qiang Ma China 2.00h 6
Pierre Martin Canada 3.00h 19
Bela Mhasavade India 1.50h 4
Kianoosh Mohseni Iran 0.03h 1
Mohini Nagardeolekar India 1.25h 3
Mrunmayi Phatak India 1.50h 4
Sasha Prokofyev Russia 9.07h 70
Tushar Purohit India 1.00h 7
Jatin Rathod India 0.97h 2
Nikhil Sharma India 1.00h 7
Andrzej Skoczewski Poland 1.17h 9
Terrence Ross United States 11.5h 31
Michel Vandeputte Belgium 12.67h 35
Jurgen Rendtel Germany 13h 47
Alexandr Maidik Ukraine 1.20h 8
Javor Kac Slovenia 3.64h 21
Shigeo Uchiyama Japan 2.00h 14
William Watson United States 2.03h 3
Thomas Weiland Austria 6.84h 19
Xiaofan Wei China 1.50h 6
Chenghao Yu China 2.14h 2
Yidong Yu China 2.08h 2
Weizhou Zeng China 2.50h 6
Tianwei Zhang China 1.74h 1
Allen Zhong China 1.2h 3

Data access

Create your own analysis. The files below can be opened using Excel:
leo2012_rate.csv (number of meteors per interval per observer)
leo2012_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 ESA/RSSD and Armagh Observatory.

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.