This page shows automated results of the Eta-Aquariids 2008, based on visual data entered through the IMO electronic report form. Send your feedback regarding this page to Geert Barentsen. Note that these automated results may not be suitable for scientific use!
Page generated: 2008 May 12 at 6:20 UT.
ZHRmax = 74 based on 219 Eta-Aquariids in 59 data intervals, assuming fixed population index r = 2.4 and zenith correction 1/sin(hR).
| Time (UT) | Solarlon | nINT | nETA | ZHR | |
|---|---|---|---|---|---|
| 2008-04-27 11:25 | 37.455 | 1 | 1 | 23 | +-16 |
| 2008-04-28 11:20 | 38.424 | 1 | 0 | 15 | +-15 |
| 2008-05-01 11:20 | 41.338 | 1 | 2 | 11 | +-6 |
| 2008-05-04 07:01 | 44.074 | 3 | 15 | 50 | +-12 |
| 2008-05-04 20:32 | 44.620 | 6 | 16 | 29 | +-7 |
| 2008-05-05 07:29 | 45.062 | 4 | 15 | 20 | +-5 |
| 2008-05-05 10:41 | 45.191 | 2 | 16 | 34 | +-8 |
| 2008-05-06 00:13 | 45.737 | 8 | 15 | 41 | +-10 |
| 2008-05-06 01:10 | 45.776 | 24 | 114 | 74 | +-7 |
| 2008-05-06 09:56 | 46.129 | 4 | 10 | 29 | +-9 |
| 2008-05-07 19:45 | 47.493 | 3 | 7 | 21 | +-7 |
| 2008-05-08 10:35 | 48.091 | 2 | 8 | 9 | +-3 |
For each estimation interval: time is the middle of the interval, nINT is the number of observing periods and nETA is the number of Eta-Aquariids involved. ZHR = (1 + sum nETA) / 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.
Data has been received from 33 observers in 11 countries. Thank you for your efforts!
| Observer | Country | Teff | nETA |
|---|---|---|---|
| Salvador Aguirre | Mexico | 7.40h | 32 |
| Rainer Arlt | Germany | 0.70h | 1 |
| Orley Cruz | Cuba | 1.81h | 3 |
| Mark Davis | United States | 3.23h | 8 |
| Gadi Eidelheit | Israel | 1.41h | 18 |
| Shlomi Eini | Israel | 0.67h | 4 |
| Stela Frencheva | Bulgaria | 0.32h | 0 |
| William Godley | United States | 2.52h | 6 |
| Sylvie Gorkova | Czech Republic | 5.00h | 1 |
| Hodaya Guedg | Israel | 1.33h | 24 |
| Shy Halatzi | Israel | 2.18h | 38 |
| Wayne T. Hally | United States | 7.65h | 5 |
| Roberto Haver | Italy | 0.88h | 9 |
| Vilem Heblik | Czech Republic | 5.99h | 8 |
| Carl Hergenrother | United States | 0.61h | 4 |
| Netanel Hershkovitz | Israel | 0.83h | 6 |
| Carl Johannink | Netherlands | 5.05h | 3 |
| Jakub Koukal | Czech Republic | 41.69h | 17 |
| Adrian Lelyen | Cuba | 1.87h | 3 |
| Peter Van Leuteren | Netherlands | 6.10h | 8 |
| Anna S. Levina | Israel | 2.66h | 33 |
| Robert Lunsford | United States | 6.50h | 16 |
| Koen Miskotte | Netherlands | 13.48h | 5 |
| Avi Osher | Israel | 1.67h | 17 |
| Branislav Pelech | Slovakia | 0.53h | 2 |
| Dominik Rajsky | Slovakia | 0.53h | 1 |
| Jurgen Rendtel | Germany | 10.85h | 5 |
| Branislav Savic | Serbia | 1.80h | 7 |
| Monika Skvarilova | Slovakia | 0.53h | 0 |
| Tadeusz Sobczak | Poland | 1.01h | 10 |
| Matej Sustr | Slovakia | 0.95h | 2 |
| Michal Sustr | Slovakia | 0.95h | 0 |
| David Swann | United States | 1.95h | 7 |
Create your own analysis!
Rate intervals: eta2008_rate.csv (CSV-format).
Magnitude distributions: eta2008_magn.csv (CSV-format).
