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Quadrantids 2012: visual data quicklook

Introduction

This page shows automated results of the Quadrantids 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 February 17 at 14:09 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 = 83 based on 2033 Quadrantids reported in 349 intervals, assuming population index r = 2.1

ZHR graph

Time (UTC)Solarlon nINT nQUA ZHR Particle density
2012-01-02 03:30 280.959 1 1 10±7 17 / 109·km3
2012-01-03 03:42 281.987 7 24 6±1 10 / 109·km3
2012-01-03 16:34 282.533 8 23 26±5 44 / 109·km3
2012-01-03 20:42 282.708 8 20 27±6 46 / 109·km3
2012-01-03 21:55 282.760 4 20 49±11 84 / 109·km3
2012-01-03 23:19 282.820 19 32 46±8 78 / 109·km3
2012-01-04 00:21 282.864 34 94 48±5 82 / 109·km3
2012-01-04 01:14 282.901 34 109 39±4 66 / 109·km3
2012-01-04 02:20 282.948 44 262 45±3 77 / 109·km3
2012-01-04 03:17 282.988 47 299 55±3 94 / 109·km3
2012-01-04 04:16 283.030 37 334 63±3 107 / 109·km3
2012-01-04 05:18 283.074 30 239 82±5 140 / 109·km3
2012-01-04 06:08 283.109 7 74 80±9 136 / 109·km3
2012-01-04 07:42 283.175 4 29 54±10 92 / 109·km3
2012-01-04 08:41 283.217 11 81 80±9 136 / 109·km3
2012-01-04 09:26 283.249 8 75 64±7 109 / 109·km3
2012-01-04 10:32 283.296 8 46 56±8 95 / 109·km3
2012-01-04 11:35 283.341 7 56 48±6 82 / 109·km3
2012-01-04 12:43 283.388 9 71 51±6 87 / 109·km3
2012-01-04 13:37 283.427 4 45 58±9 99 / 109·km3
2012-01-04 17:12 283.579 4 20 78±17 133 / 109·km3
2012-01-04 18:12 283.621 4 24 83±17 141 / 109·km3
2012-01-04 19:14 283.665 4 22 62±13 106 / 109·km3
2012-01-04 20:07 283.703 3 21 70±15 119 / 109·km3
2012-01-05 03:13 284.004 3 12 29±8 49 / 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 63 observers in 24 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

ObserverCountryTeffnQUA
Ioan Agavriloaiei Romania 2.48h 49
Karl Antier France 1.00h 50
Rainer Arlt Germany 1.27h 37
Fodor Balázs Hungary 0.51h 4
Leonardo Barbosa Brazil 1.13h 6
Steve Berte United States 1.42h 28
Jean-marie Biets Belgium 1.25h 9
Zsofia Biro Hungary 6.50h 107
Jens Briesemeister Germany 1.50h 25
Steven Brown United Kingdom 1.00h 13
Apostolos Christou United Kingdom 1.33h 19
Daniel Cosovanu Romania 1.02h 27
Ilie Cosovanu Romania 1.02h 21
Mark Davis United States 1.96h 19
Peter Detterline United States 2.95h 37
Sietse Dijkstra Netherlands 0.83h 7
Todor Dimitrov Bulgaria 2.48h 13
Motahareh Ebrahimi Iran 0.69h 15
Shlomi Eini Israel 2.00h 36
Richard Fleet United Kingdom 2.72h 69
William Godley United States 2.42h 13
Shy Halatzi Israel 2.39h 40
Oliver Hanke Germany 1.33h 14
Carl Hergenrother United States 0.63h 16
Jane Houston Jones United States 3.35h 16
Chengyun Huang China 2.5h 3
Gregory Jones United States 1.00h 18
Karoly Jonas Hungary 6.75h 74
Mayura Karandikar India 1.49h 27
Masoume Kazemi Iran 0.69h 12
André Knöfel Germany 4.92h 22
Katsuyuki Kobayashi Japan 0.50h 0
Richard Kramer United States 0.48h 5
Anna Levin Israel 2.97h 47
Junyi Li China 1.00h 2
Alexandr Maidik Ukraine 1.00h 1
Qiang Ma China 2.00h 25
Pierre Martin Canada 3.66h 121
Alastair Mcbeath United Kingdom 4.37h 97
Artyom Novichonok Russia 0.79h 5
Francisco Ocaña González Spain 1.85h 94
Ella Ratz Israel 2.33h 35
Clara Ricken Germany 1.22h 23
Miguel Rojas Costa Rica 0.32h 3
Miguel Rojas Costa Rica 0.31h 8
Raloca Rufu Israel 3.60h 55
Mikiya Sato Japan 0.50h 1
Christian Schmiel Germany 0.97h 23
Kai Schultze Germany 2.32h 32
Hideki Seo Japan 0.50h 5
Florin Stancu Romania 4.30h 155
Wesley Stone United States 2.89h 124
Richard Taibi United States 0.65h 9
Csilla Tepliczky Hungary 1.06h 2
Istvan Tepliczky Hungary 1.00h 16
Kazumi Terakubo Japan 1.00h 5
Rushikesh Tilak India 2.28h 14
Jurgen Rendtel Germany 5.08h 74
Jakub Koukal Czech Republic 10.25h 54
Branislav Savic Serbia 1.58h 51
Michel Vandeputte Belgium 4.77h 58
Shigeo Uchiyama Japan 5.13h 91
Peter Van Leuteren Netherlands 1.25h 19
Spandan Waghmare India 1.50h 10
Oliver Wusk Germany 1.67h 15

Data access

Create your own analysis. The files below can be opened using Excel:
qua2012_rate.csv (number of meteors per interval per observer)
qua2012_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.