Proposed Iridium Flare Report format

Ron Lee (
Tue, 26 Aug 1997 22:28:36

The Iridium flares are already being defined with some degree of
predictability.  If the persons submitting reports agree with the
following "suggested" format, it may allow quicker identification
of candidate passes to observe.

UT Date/time:
UT Offset:
Flare Az/El:
Pass Max Az/El:
Pass Direction:
Sun Az/El:
Sun Phase Angle:
Flare Magnitude:
Flare Duration:

Description of the format follows:  The above is a blank for cut/paste/use.

Satellite:  97-043 A and/or #24903 (standardize on one or include both)
UT Date/time:  Self-explanatory
UT Offset:  For Craig, this is -7 during daylight savings time.  Allows
	    others to determine observer local time.
Flare Az/El:   Approximate azimuth and elevation of the flare
Pass Max Az/El:  Maximum elevation and azimuth for that pass
Pass Direction:  Quicksat value or Northerly/Southerly  (N/S)
Sun Az/El:  If UT offset is not known, this also IDs whether a morning or
	    evening pass.
Sun Phase Angle:   If known
Flare Magnitude:   Best guess
Flare Duration:   Self-explanatory
Observer:   Self-explanatory
Location:   If not readily known
Comments:   Any additional input

Based on current reports..we know that a southbound evening pass with the
satellite to the east of the observer may flare for a specific max el pass.
I observed the same passes that Craiged viewed a few days ago and I saw no
flare. the difference is that the satellite was to the WEST of me.

We also know that a northbound morning pass can produce flares when the 
satellite is WEST of the observer.  Again, I saw the same pass as Paul
but only observed less intense flaring in the north (path to my east).

Comments or suggestions welcome.

Ron Lee