Lyrids 2007: first results

Introduction

This page shows automated results of the Lyrids 2007, based on visual data entered through the IMO electronic report form. Send your feedback regarding this page to Geert Barentsen or visit the project pages. Note that automated results are not suitable for scientific use!

Immy Activity profile
Immy Observer statistics
Immy Data access

Page generated on 9 December 2008 at 2:48 UT.

Activity profile

ZHRmax = 21 based on 796 Lyrids in 201 data intervals, assuming fixed population index r = 2.1 and zenith correction 1/sin(hR).

ZHR graph

Time (UT)SolarlonnINTnLYRZHR
2007-04-15 12:0325.0486102+-1
2007-04-16 10:4425.9745123+-1
2007-04-17 06:3626.785573+-1
2007-04-18 16:5428.1826153+-1
2007-04-19 15:4629.113573+-1
2007-04-20 22:2030.35822575+-1
2007-04-21 16:4331.10621505+-1
2007-04-21 23:4731.39312518+-1
2007-04-22 01:1131.45012659+-1
2007-04-22 02:0731.48895210+-1
2007-04-22 17:1332.102155010+-1
2007-04-22 22:1532.306207117+-2
2007-04-22 23:0732.342117321+-2
2007-04-23 00:1832.390149718+-2
2007-04-23 01:1432.4282212616+-1
2007-04-23 02:0932.465165310+-1

For each estimation interval: time is the middle of the interval, nINT is the number of observing periods and nLYR is the number of Lyrids involved. ZHR = (1 + sum nLYR) / sum(Teff/C) where Teff is the effective observing time and C is the total correction for limiting magnitude, clouds and zenith correction. The solar longitudes refer to equinox J2000.0.

Observer statistics

Data has been received from 35 observers in 15 countries. Thank you for your efforts!

Spatial distribution

Spatial distribution

Temporal distribution

Temporal distribution

Table of observers

ObserverCountryTeffnLYR
Salvador Aguirre Mexico 1.00h 4
Rainer Arlt Germany 3.11h 18
Pierre Bader Germany 11.45h 59
Ricardas Balciunas Lithuania 3.00h 16
Felix Bettonvil Netherlands 1.78h 4
Jean-marie Biets Belgium 2.48h 8
Andreas Buchmann Switzerland 9.92h 29
Dariusz Dorosz Poland 6.50h 32
Gunther Fleerackers unknown 1.00h 9
Gunther Fleerackers Belgium 1.33h 2
Stela Frencheva Bulgaria 4.09h 27
Mitja Govedic Slovenia 8.95h 89
Pavol Habuda Slovakia 1.17h 9
Wayne T. Hally United States 8.70h 35
Joost Hartman Netherlands 2.07h 4
Roberto Haver Italy 2.09h 21
Jay Kansara India 3.43h 9
Roy Keeris Netherlands 3.57h 10
Andre Knofel Germany 8.76h 42
Richard Kramer United States 0.62h 3
Alister Ling Canada 1.72h 6
Koen Miskotte Netherlands 12.11h 64
Sabine Wachter Germany 1.25h 3
Sven Nather Germany 2.11h 18
Martin Nedved Czech Republic 2.14h 19
Swapnil Pawar India 2.95h 6
Jatin Rathod India 3.46h 5
Jurgen Rendtel Germany 20.84h 101
Ulrich Sperberg Germany 4.29h 13
Manuela Trenn Germany 2.00h 8
David Vansteenlant Belgium 2.05h 16
Michel Vandeputte Belgium 14.25h 107
Jan Verfl Czech Republic 1.63h 12
Frank Wachter Germany 1.25h 4
Thomas Weiland Austria 4.39h 41

Data access

Original observations: browse report forms.
Rate intervals: lyr2007.csv (CSV-format).

More to come...