Activity profileZHRmax = 36 based on 709 reported Orionids, assuming population index r = 2.0.
ZHR (Zenithal Hourly Rate) is the number of meteors an observer would see under a dark sky with the radiant of the shower in zenith.
Time (UTC)SolarlonnINTnORIZHR2009-10-13 01:03199.7001011±112009-10-13 21:03200.526963±12009-10-14 07:09200.9429155±12009-10-15 02:51201.756563±12009-10-17 01:30203.68471610±22009-10-18 03:36204.76424399±12009-10-19 04:15205.78465118±22009-10-19 11:59206.104145718±22009-10-19 23:21206.57586228±42009-10-20 03:17206.738119127±32009-10-20 11:33207.080125124±32009-10-20 17:42207.33599536±42009-10-20 23:00207.55485632±42009-10-21 03:59207.76155125±32009-10-21 09:04207.972135631±42009-10-21 13:10208.14255734±4 Time is the middle of the interval in Universal Time (UTC), Solarlon is the position of the earth relative to the sun (equinox J2000.0), nINT is the number of reported observing periods and nORI is the reported number of Orionids.
ZHR = (1 + sum nORI) / sum(Teff/C) where Teff is the effective observing time and C is the total correction for limiting magnitude, clouds and zenith correction 1/sin(hR).
Observer statisticsData has been received from 27 observers in 13 countries. Thank you for your efforts!
Spatial distribution of observersNote: click on the map for an interactive version.
置顶卡
变色卡
千斤顶
显身卡
