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Lyrids 2013: visual data quicklook

Introduction

This page shows automated results of the Lyrids 2013, 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 May 4 at 22:42 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 = 22 based on 319 Lyrids reported in 120 intervals, assuming population index r = 2.1

ZHR graph

Time (UTC)Solarlon nINT nLYR ZHR Particle density
2013-04-15 22:22 25.919 6 6 3±1 4 / 109·km3
2013-04-16 22:19 26.895 7 10 4±1 6 / 109·km3
2013-04-18 00:30 27.962 1 1 7±5 10 / 109·km3
2013-04-19 01:53 28.995 6 9 4±1 6 / 109·km3
2013-04-20 00:29 29.915 13 23 5±1 7 / 109·km3
2013-04-20 05:25 30.116 11 11 5±1 7 / 109·km3
2013-04-21 00:59 30.911 11 27 7±1 10 / 109·km3
2013-04-21 14:00 31.440 5 21 9±2 13 / 109·km3
2013-04-21 23:32 31.828 7 22 11±2 16 / 109·km3
2013-04-22 00:45 31.877 16 41 11±2 16 / 109·km3
2013-04-22 01:43 31.916 13 51 14±2 20 / 109·km3
2013-04-22 02:37 31.953 6 35 19±3 27 / 109·km3
2013-04-22 07:54 32.168 6 32 19±3 27 / 109·km3
2013-04-22 10:29 32.272 3 20 22±5 31 / 109·km3
2013-04-22 19:43 32.647 6 5 6±2 9 / 109·km3
2013-04-23 21:05 33.677 3 5 6±2 9 / 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 29 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

ObserverCountryTeffnLYR
Alexandre Amorim Brazil 2.95h 4
Tom Axelsen Denmark 1.83h 2
Martha Batista De Lima Brazil 0.40h 2
Adair Cardoso Brazil 1.95h 0
Seokhee Cho South Korea 0.47h 4
Schultze Kai Germany 1h 4
Jelena Krsmanovic Serbia 1.75h 8
Yuriy Kuznetsov Russia 1.75h 3
Tomasz Lenart Poland 0.50h 1
Tomasz Lenart Poland 1.00h 4
Michael Linnolt United States 0.37h 2
Tamara Majic Serbia 2.00h 10
Qiang Ma China 1.00h 2
Andjelka Milovanovic Serbia 2.00h 16
Alexsandr Morozov Russia 3.63h 10
Jovana Nikolic Serbia 1.75h 9
Tamara Paramentic Serbia 2.00h 6
Dunja Pavlovic Serbia 2.00h 11
Bogdan Radic Serbia 2.00h 11
Andrzej Skoczewski Poland 3.00h 13
Richard Taibi United States 1.43h 6
Terrence Ross United States 9.04h 66
William Watson United States 0.83h 2
Maciek Myszkiewicz Poland 21h 29
Branislav Savic Serbia 9.93h 53
Koen Miskotte Netherlands 6.8h 30
Alexandr Maidik Ukraine 8h 9
Michel Vandeputte Belgium 5.75h 45
Salvador Aguirre Mexico 2.50h 20
Sasha Prokofyev Cyprus 1.25h 5

Data access

Create your own analysis. The files below can be opened using Excel:
lyr2013_rate.csv (number of meteors per interval per observer)
lyr2013_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.