Iridium 9 Flare 23 Sept. 1997

JRBURCA@aol.com
Wed, 24 Sep 1997 03:18:33 -0400 (EDT)

Date 23 Sept 97 local or 24 Sept 97 UTC.  Time of flare ~03:21 UTC.
At first not able to spot it with binoculars so went inside to check the
STS Plus screen.  Stepping outside, saw what seemed to be the 
final second or two of a flare with unaided eye.  Then it faded but
after about 5 sec. or so fortunately it flared again.  Was able to 
compare to Jupiter in same part of sky.  Not as bright as Jupiter
but much brighter than Vega so I'm saying -2 magnitude for ~5 sec.
Measurements best I could come up with but not necessarily so
accurate.

24839 97-09-24 3:21:xx S 150 35 86.9 59 283.4 -20.2 Unk 5 -2 JR 97-030D

 1)   NORAD:  NORAD number.
 2)   Date:   YY-MM-DD  (year-month-day) - I used UTC date 
 3)   Time:  UTC of course.   
 4)   Dir:   Direction of satellite travel.   
 5)   aI:    Azimuth of Iridium at max flare...measured eastward from north
 6)   eI:    Elevation of max flare point..also called Altitude by some
 7)   aM:    Azimuth of maximum elevation/altitude for this pass
 8)   eM:    Maximum elevation/altitude
 9)   aS:    Azimuth of the Sun at max flare.
 10)  eS:   Elevation of sun at max flare
 11)  Phs:   Sun phase angle.    
 12)  Dur:   Duration of flare in seconds.  Since it is subjective when to
 start the timing, exact values are not critical.
 13)  Mag:   Magnitude of max flare to whole magnitude is enough.
 14)  Obs:   Observer initials.  Now three spaces.
 15)  COSPAR:  International designator.

Maybe I'll just forget the binoculars and going inside to check the
computer screen and instead just watch the sky at 1 power when
looking for Iridium flares.

Jake Rees
Burbank, Calif., USA
(118.3117 W, 34.1817 N, 190 meters)