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Quadrantids 2011: visual data quicklook

Introduction

This page shows automated results of the Quadrantids 2011, 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 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

Page generated: 2011 March 26 at 18:53 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 = 90 based on 1969 Quadrantids reported in 264 intervals, assuming population index r = 2.1

ZHR graph

Time (UTC)Solarlon nINT nQUA ZHR Particle density
2010-12-30 01:22 278.069 6 3 1±0 2 / 109·km3
2011-01-02 02:19 281.168 3 9 8±3 14 / 109·km3
2011-01-02 22:49 282.039 7 10 9±3 15 / 109·km3
2011-01-03 03:26 282.235 10 19 8±2 14 / 109·km3
2011-01-03 13:21 282.656 5 20 19±4 32 / 109·km3
2011-01-03 17:50 282.847 11 23 34±7 58 / 109·km3
2011-01-03 21:30 283.003 10 40 65±10 111 / 109·km3
2011-01-03 22:35 283.048 13 103 90±9 153 / 109·km3
2011-01-03 23:42 283.096 17 93 69±7 118 / 109·km3
2011-01-04 00:41 283.138 24 234 63±4 107 / 109·km3
2011-01-04 01:51 283.187 29 265 69±4 118 / 109·km3
2011-01-04 02:51 283.230 33 333 74±4 126 / 109·km3
2011-01-04 03:50 283.271 35 428 73±4 124 / 109·km3
2011-01-04 04:46 283.311 25 272 62±4 106 / 109·km3
2011-01-04 06:47 283.396 7 20 60±13 102 / 109·km3
2011-01-04 07:40 283.435 4 27 58±11 99 / 109·km3
2011-01-04 09:41 283.520 4 19 36±8 61 / 109·km3
2011-01-04 20:19 283.971 7 21 19±4 32 / 109·km3
2011-01-05 01:03 284.173 7 24 13±3 22 / 109·km3
2011-01-05 03:07 284.261 1 5 13±5 22 / 109·km3
2011-01-05 23:08 285.111 1 1 6±4 10 / 109·km3
2011-01-07 06:58 286.463 3 0 7±7 12 / 109·km3
2011-01-09 22:45 289.172 2 0 2±2 3 / 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 48 observers in 20 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
Salvador Aguirre Mexico 0.20h 5
Hamed Altafi Iran 2.66h 52
Elena Barsky Israel 1.33h 17
Suresh Bhattarai Nepal 1.50h 16
Jens Briesemeister Germany 1.00h 19
Jakub Cerny Czech Republic 0.92h 49
Daniel Cosovanu Romania 2.00h 29
Anderson Dantas Brazil 1h 1
Mark Davis United States 2.04h 15
Chander Devgun India 1.20h 41
Dariusz Dorosz Poland 0.75h 26
Christoph Gerber Germany 0.67h 3
William Godley United States 1.50h 9
Sylvie Gorkova Czech Republic 1.00h 4
Vilem Heblik Czech Republic 3.80h 37
Kamil Hornoch Czech Republic 6.62h 228
Petr Horalek Czech Republic 6.00h 216
Karoly Jonas Hungary 5.18h 158
Javor Kac Slovenia 3.00h 228
Stanislav Korotkiy Russia 1.48h 31
Jakub Koukal Czech Republic 23.87h 271
Roman Kovalyk Italy 1.37h 16
Jens Lacorne France 1.88h 0
Peter Van Leuteren Netherlands 1.77h 5
Anna S. Levina Israel 1.83h 39
Simon Levin Israel 1.67h 38
Alexandr Maidik Ukraine 1.00h 3
Qiang Ma China 1.00h 26
Mikhail Maslov Russia 1.00h 14
Bruce Mccurdy Canada 3.00h 33
Fabrizio Melandri Italy 0.75h 15
Koen Miskotte Netherlands 5.20h 28
Sven Nather Germany 5.52h 10
Artyom Novichonok Russia 0.62h 3
Hamed P. Khorsandi Iran 2.66h 75
Constantin Psenitchi Romania 0.83h 6
Ella Ratz Israel 1.83h 35
Jurgen Rendtel Germany 5.44h 23
Wesley Stone United States 1.53h 26
Richard Taibi United States 1.00h 6
István Tepliczky Hungary 3.25h 84
Bing Wang China 0.58h 2
William Watson United States 1.99h 3
Thomas Weiland Austria 5.35h 188
Xiaofan Wei China 1.70h 19
Oliver Wusk Germany 2.33h 12
Weizhou Zeng China 1.10h 24
Xiang Zhan China 0.72h 7

Data access

Create your own analysis. The files below can be opened using Excel:
qua2011_rate.csv (number of meteors per interval per observer)
qua2011_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.