Re: My first superIridiumFlare

Bjoern Gimle (bjorn@tt-tech.se)
Thu, 23 Oct 1997 12:26:25 +0100

Ed Light wrote :
>approximate coordinates 40.754 N, 073.990 W), I looked North and at 06:34:28
>+/- 5s EDT (10:34:28 UTC) 60 or more degrees above the Northern horizon I saw
>an UNBELIEVELY BRILLIANT flare (or whatever) which lasted for a few seconds.
>I can't run iridflar on my work computer (a unix system), but I probably saw
>Iridium 11 or 13.
>
This should have been Irdm 11, according to time and magnitude:
Ir   Date      Time     Azim Elev   RA   Decl  Range  N Ill SunAng FlrAng Mag
-----------------------------------------------------------------------------
13 97-10-20  6:34:10.0   3.5 57.3  8h 0  73.3   909.3 A Lit  -7.5   4.89  1.7
13 97-10-20  6:34:25.2   3.2 51.4  8h17  79.1   968.2 A Lit  -7.4   0.01 -5.9
13 97-10-20  6:34:43.0   3.0 45.4  9h14  84.9  1046.8 A Lit  -7.4   4.86  2.0

11 97-10-20  6:34:53.0   0.5 56.9  7h38  73.9   896.7 A Lit  -7.3   4.79  1.6
11 97-10-20  6:35: 7.0   0.8 51.4  7h46  79.4   951.4 A Lit  -7.3   1.46 -0.8
11 97-10-20  6:35:24.0   1.1 45.5  8h11  85.2  1026.6 A Lit  -7.2   4.97  2.0

But I failed to see 11 when predicted at -5.5, though 13 was brilliant.
I haven't seen a recent obs. report of 11 - does it have an attitude problem?


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