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Lyrids 2012: visual data quicklook

Introduction

This page shows automated results of the Lyrids 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: 2012 July 22 at 14:00 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 = 37 based on 930 Lyrids reported in 285 intervals, assuming population index r = 2.1

ZHR graph

Time (UTC)Solarlon nINT nLYR ZHR Particle density
2012-04-14 03:30 24.420 2 0 1±1 1 / 109·km3
2012-04-15 05:59 25.501 3 2 3±2 4 / 109·km3
2012-04-16 04:32 26.421 8 6 2±1 3 / 109·km3
2012-04-17 03:13 27.346 9 11 2±1 3 / 109·km3
2012-04-18 05:44 28.426 3 5 6±2 9 / 109·km3
2012-04-19 05:59 29.413 4 2 2±1 3 / 109·km3
2012-04-20 00:21 30.161 6 25 10±2 14 / 109·km3
2012-04-20 03:40 30.296 8 23 9±2 13 / 109·km3
2012-04-20 19:53 30.956 15 27 5±1 7 / 109·km3
2012-04-20 23:23 31.098 10 21 5±1 7 / 109·km3
2012-04-21 00:52 31.158 11 23 4±1 6 / 109·km3
2012-04-21 07:20 31.421 8 20 8±2 11 / 109·km3
2012-04-21 20:33 31.959 6 21 13±3 19 / 109·km3
2012-04-21 21:34 32.000 26 59 14±2 20 / 109·km3
2012-04-21 22:24 32.034 22 90 17±2 24 / 109·km3
2012-04-21 23:25 32.075 18 81 18±2 26 / 109·km3
2012-04-22 00:27 32.117 22 161 20±2 29 / 109·km3
2012-04-22 01:24 32.156 29 175 23±2 33 / 109·km3
2012-04-22 02:13 32.189 13 67 25±3 36 / 109·km3
2012-04-22 05:24 32.319 16 20 20±4 29 / 109·km3
2012-04-22 06:40 32.370 8 21 19±4 27 / 109·km3
2012-04-22 08:14 32.434 11 23 10±2 14 / 109·km3
2012-04-22 10:37 32.531 6 24 11±2 16 / 109·km3
2012-04-22 22:13 33.002 9 17 6±1 9 / 109·km3
2012-04-23 06:57 33.357 2 1 3±2 4 / 109·km3
2012-04-24 12:40 34.563 3 2 4±2 6 / 109·km3
2012-04-25 13:52 35.586 3 1 3±2 4 / 109·km3
2012-04-26 02:07 36.083 3 0 6±6 9 / 109·km3
2012-04-26 20:10 36.815 1 2 37±21 53 / 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 54 observers in 21 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

ObserverCountryTeffnLYR
Salvador Aguirre Mexico 2.70h 13
Jose Alvarellos United States 1.00h 3
Alexandre Amorim Brazil 3.55h 12
Rainer Arlt Germany 3.05h 18
Stela Arlt Germany 1.08h 8
Pierre Bader Germany 6.35h 17
Sara Belejova Slovakia 4.00h 4
Zora Beljic Serbia 2.50h 27
Ilie Cosovanu Romania 0.50h 2
Tibor Csörgei Slovakia 1.49h 17
Anderson Dantas Brazil 1.68h 3
Diego De Bastiani Brazil 1.80h 10
Sietse Dijkstra Netherlands 3.08h 12
Audrius Dubietis Lithuania 1.50h 5
Motahareh Ebrahimi Iran 1.08h 4
Frank Enzlein Germany 2.04h 3
Mihael Farkas Serbia 3.2h 39
Enzlein Frank Germany 2.33h 23
Vilem Heblik Czech Republic 7.75h 47
Karl Gauti Hjaltason Iceland 0.67h 6
Margarete Jacques Amorim Brazil 3.16h 4
Milada Jakubecova Slovakia 4.00h 9
Jane Houston Jones United States 4.08h 36
Zdenek Komarek Slovakia 4.00h 6
Ralf Koschack Germany 1.05h 13
Eva Laczko Hungary 2.83h 11
Anna Levina Israel 2.73h 46
Mike Linnolt United States 1.00h 3
Alexandr Maidik Ukraine 6.7h 17
Boris Majic Serbia 3.82h 55
Andjelka Milovanovic Serbia 3.74h 42
Damnjan Mili? Serbia 1.00h 5
Koen Miskotte Netherlands 2.89h 1
Maciej Myszkiewicz Poland 4.20h 6
Michal Palo Slovakia 4.00h 6
Jovana Pavlovic Serbia 2.50h 22
Krzysztof Pieszczoch Poland 1.00h 1
Ella Ratz Israel 2.70h 38
Clara Ricken Germany 1.88h 14
Terrence Ross United States 17.75h 60
Christian Schmiel Germany 3.68h 33
Stefan Schmeissner Germany 2.32h 3
Andrey Semenyuta Kazakhstan 1.40h 2
Andrzej Skoczewski Poland 2.92h 23
Katarina Skopalova Slovakia 4.00h 1
Richard Taibi United States 3.00h 1
Rushikesh Tilak India 1.00h 7
Christoph Gerber Germany 5.55h 3
Jakub Koukal Czech Republic 5.50h 90
Jurgen Rendtel Germany 6.84h 22
Michel Vandeputte Belgium 7.48h 26
Wienie Van Der Oord Israel 1.75h 11
Frank Waechter Germany 1.18h 6
Sabine Waechter Germany 1.48h 2
Thomas Weiland Austria 4.61h 56
Ilkka Yrjölä Finland 1.03h 4

Data access

Create your own analysis. The files below can be opened using Excel:
lyr2012_rate.csv (number of meteors per interval per observer)
lyr2012_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.