Iridium Flare Consolidation

Ron Lee (ronlee@pcisys.net)
Sun, 14 Sep 1997 16:46:27

The following info summarizes the majority of the Iridium flashes reported
to date (except the exciting 7 satellite flare of the 14 Sep Proton launch
by Craig Cholar).   In some cases, duplicate flares of newly launched
objects are not included (laziness on my part).  The info has not been
sorted yet...possibly by morning and evening passes.  Will also have to 
change some reports where the same observer (like Paul Maley) saw the 
sequence over a few days...thus showing a ramp-up/down of brightness.

I have changed the format slightly.  eliminated the UT offset and included
that with the observer position.  Intent is to keep the line length on
one line within the email constraints.

Original reporters are encouraged to correct any mistakes/omissions I made.
Inclusion of missing data is also welcome.  I have supplied missing data
where possible.

NO analysis at this time.  My best is probably just sequencing the data to
show common flare circumstances, which may not be adequate to predict
future flares.

Ron Lee

Data from left to right:

UT -  UT of mid flare
Date - not labeled but obvious (UT date)
Sat Dir- direction of travel, either Quicksat value or North or South
Sat AZ/EL - Azimuth and elevation of mid-flare, measured eastward
	    or clockwise from due north
Sun AZ/EL - Position of sun at mid flare
Flare Dur - duration of flare in seconds.  Obviously subjective
Flare Mag - brightness of flare
Obs - Observer's initials
Sun Phase - sun phase angle
Pass Az/EL - Maximum elevation and azimuth for that pass
NORAD # - Self-explanatory


		    Sat   Sat      Sun    Flare       Sun Phase      NORAD #
   UT               Dir  AZ  EL   AZ  EL  Dur Mag   OBS       Pass Az/El
04:19:45  08/23/97   95  094 52  299 -17   8  -4     CC  Unk  --- --  24795
03:04:10  08/31/97    S  130 54  292 -12   ?  -4     PW  Unk   86 63  24796
21:34:xx  08/23/97    S   East   321 -19   ?  -4     TC  Unk   76 34  24837
04:13:45  08/24/97   95  100 51  298 -16   7  -3     CC  Unk  --- --  24792

20:27:00  08/21/97  070  028 30  324 -1  >20  -1     BG  Unk  --- --  xxxxx
20:27:20  08/21/97  070  033 33  324 -13 >20  -1     BG  Unk  --- --  xxxxx

12:37:--  08/25/97    ?  SSW 25  070 -09  ~8  -2     JR  Unk  --- --  24904

11:03:00  08/25/97    N  211 35  ENE -xx  15  -4     PM   41  --- --  24903
10:58:xx  08/26/97    N  214 34  ENE -xx  15  -5     PM   38  --- --  24907

11:13:xx  08/24/97    N   24 17   64 -12  ~5   1    RGL  Unk   87 42  24903

12:35:xx  08/26/97    N  xxx xx  294 -24  10  -3     JR  Unk  273 50  24907

19:58:xx  08/26/97  073  042 36  317 -12   5  +3    BJG  Unk  --- --  24836
20:07:xx  08/26/97  070  043 41  319 -13   6  -1    BJG  Unk  --- --  24841

02:26:25  08/27/97    S  116 50  294 -17   2  -1.5  SJW   31  083 53  24793

10:50:--  08/28/97    N  220 32  --- ---  xx   2.5   PM   32  --- --  24907

00:51.9   08/27/97    S  104 51  297 -14  xx   0    ESL  046  085 61  24792
01:06.9   08/23/97    S  089 51  300 -15  xx  +1    ESL  043  084 52  24794
00:57.9   08/26/97    S  101 61  298 -15  xx  +1    ESL  047  086 62  24795

10:53:57  08/29/97    N  015 16   62 -17  15  +2    RGL  Unk  089 56  24906
11:00:45  08/27/97    N  024 17  063 -15  10  -4    RGL  Unk  088 51  24907

20:24:12  08/31/97    S  059 43  313 -18  >5  -0.5   AS  Unk  --- --  24840

03:04:10  08/31/97    S  130 54  292 -12   ?  -4     PW  Unk  086 63  24796

19:57:17  09/06/97    S  069 49  307 -17  10  -2     AS  Unk   79 49  24839

20:22:47  09/05/97    S  077 46  --- ---  10  -5     KJ  050  --- 50  24838
20:16:24  09/06/97    S  077 46  --- ---   8  -1     KJ  049  --- 46  24837


Craig Cholar        CC    36.6862, -121.8050,             UTC-7
Tristan Cools       TC     3.2478E, 51.2277N, 3.75 m      UTC+0
Bjoern Gimle        BG    59.22371 N, 18.22857 E, 44 m
Jake Rees           JR  -118.3117, 34.1817,               UTC-7
Paul Maley          PM    29.5378 N; 95.0868 W; 6 m,      UTC-5
Ron Lee            RGL   104.4614 W, 38.9478 N, 2073 m,   UTC-7
Sue J Worden,      SJW,   97.7 W, 30.4 N, 150 m,          UTC-5
Alexander Seidel    AL    9.4683 E, 53.5932 N, 6m,        UTC+2
Patrick Wiggins     PW   112.15 W,   37.73 N, 2300 m      UTC-7
Kurt Jonckheere     KJ   4.2656 E, 51.2344 N, 0 m,        UTC+0