Leonids 2008: visual data quicklook

Introduction

This page shows automated results of the Leonids 2008, based on visual data entered through the IMO electronic report form. Note that these automated results may not be suitable for scientific use; please refer to manual analysis results published in journal papers (e.g., WGN) when available. Send your feedback regarding this page to Geert Barentsen.

Immy Activity profile
Immy Peak profile in detail
Immy Observer statistics
Immy Data access

Page generated: 2008 December 8 at 23:15 UT.

Activity profile

ZHRmax = 99 based on 672 Leonids in 298 data intervals, assuming fixed population index r = 2.0 and zenith correction 1/sin(hR).

ZHR graph

Time (UT)SolarlonnINTnLEOZHR
2008-11-09 21:13227.7276104±1
2008-11-10 21:25228.7406125±1
2008-11-12 00:14229.863171810±2
2008-11-12 03:30230.00081017±5
2008-11-15 05:01233.0836119±3
2008-11-16 03:15234.0152813±4
2008-11-16 23:32234.867436535±4
2008-11-17 00:33234.910347059±7
2008-11-17 01:08234.934326550±6
2008-11-17 01:37234.955266665±8
2008-11-17 02:03234.973216899±12
2008-11-17 02:29234.991176982±10
2008-11-17 03:46235.045246550±6
2008-11-17 13:43235.463143019±3
2008-11-18 02:02235.981117019±2
2008-11-18 15:12236.534141913±3
2008-11-19 02:48237.021667±3
2008-11-21 15:19239.567863±1
2008-11-22 02:20240.031343±1

For each estimation interval: time is the middle of the interval, nINT is the number of observing periods and nLEO is the number of Leonids involved. ZHR = (1 + sum nLEO) / 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.

Peak profile in detail

ZHRmax = 98 based on 498 Leonids in 211 data intervals, assuming fixed population index r = 2.0 and zenith correction 1/sin(hR).

ZHR graph

Time (UT)SolarlonnINTnLEOZHR
2008-11-16 23:19234.858304737±5
2008-11-17 00:13234.896304544±6
2008-11-17 00:45234.918204760±9
2008-11-17 01:06234.933234953±7
2008-11-17 01:29234.949224549±7
2008-11-17 01:46234.961144689±13
2008-11-17 02:04234.974144898±14
2008-11-17 02:21234.986124693±14
2008-11-17 02:36234.996104581±12
2008-11-17 03:38235.039194541±6
2008-11-17 12:15235.401173521±4

For each estimation interval: time is the middle of the interval, nINT is the number of observing periods and nLEO is the number of Leonids involved. ZHR = (1 + sum nLEO) / 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 29 observers in 15 countries. Thank you for your efforts!

Spatial distribution

Spatial distribution

Temporal distribution

Temporal distribution

Table of observers

ObserverCountryTeffnLEO
Salvador Aguirre Mexico 12.80h 35
Sietse Dijkstra Netherlands 6.02h 45
Irena Divisova Czech Republic 3.26h 39
Sergey Dobrowsky Belarus 1.12h 1
Jaroslaw Dygos Poland 0.83h 5
Wei Ge China 0.67h 1
William Godley United States 1.17h 4
Sylvie Gorkova Czech Republic 7.00h 27
Valentin Grigore Romania 4.86h 69
Shy Halatzi Israel 4.36h 88
Wayne T. Hally United States 6.83h 19
Roberto Haver Italy 2.79h 28
Vilem Heblik Czech Republic 3.17h 7
Kamil Hornoch Czech Republic 2.04h 22
Petr Horalek Czech Republic 0.97h 4
Carl Johannink Netherlands 1.17h 11
Jakub Koukal Czech Republic 32.01h 132
Jens Lacorne France 2.14h 29
Peter Van Leuteren Netherlands 4.52h 26
Xin Li China 0.83h 1
Jer Nan Lou Taiwan 2.00h 6
Grigoris Maravelias Greece 0.65h 1
Koen Miskotte Netherlands 4.38h 27
Jurgen Rendtel Germany 0.90h 13
Alex Scholten Netherlands 2.17h 17
Arnold Tukkers Netherlands 1.57h 5
Shigeo Uchiyama Japan 1.90h 7
Weizhou Zeng China 1.32h 1
Florian Zschage Germany 1.76h 18

Data access

Create your own analysis!
Rate intervals:
leo2008_rate.csv (CSV-format).
Magnitude distributions: leo2008_magn.csv (CSV-format).