Iridium 33 flashes from Sunday night

From: Robert Fenske Jr (
Date: Wed Mar 25 2009 - 13:50:16 UTC

  • Next message: Russell Eberst: "2009MAR24-25.OBS"

    Last Sunday evening (23 Mar 01:44 UTC) I had a ~77 deg pass of Iridium 33.  I 
    observed the satellite through binoculars.  I mentally counted the time 
    between flashes and saw a basic flash rate of between 4 and 5 seconds.  But 
    every third cycle a brighter flash came sooner -- about 3 sec after the last 
    flash -- followed by a dimmer flash about 1 sec later.  So the pattern was 
    something like F---F--Ff that repeated.  The 3 bright flashes were about the 
    same magnitude, with the weaker flash about 2 magnitudes dimmer.
    Robert Fenske, Jr
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:

    This archive was generated by hypermail 2b29 : Wed Mar 25 2009 - 13:50:52 UTC