Re: Observed odd ISS flare

From: John Locker (
Date: Sun Apr 15 2007 - 19:02:03 EDT

  • Next message: Bob Christy: "RE: Observed odd ISS flare"

    Hi Marco,
    Unfortunately conditions here deteriorated this evening with the sky almost 
    totally obscured.
    I'm wondering if you perhaps saw a flare from one of the 
    radiators....possibly the port truss radiator , which I noticed was glowing 
    nicely during last nights pass.
    ----- Original Message ----- 
    From: "Marco Langbroek" <>
    To: "satelliet lijst (SeeSat)" <>
    Sent: Sunday, April 15, 2007 9:17 PM
    Subject: Observed odd ISS flare
    > Hi all,
    > Just a few minutes ago I saw ISS giving off a true flare. I've never seen 
    > it doing this before.
    > It was low in the west crossing into Gemini at mag. -2, when suddenly (as 
    > if a switch was turned) it flared up by at least 1.5 to 2 extra 
    > magnitudes, for maybe a second or 2-3, and then back to its previous 
    > brightness again. Very conspicuous. I also had the impression of an orange 
    > colour but that could be due to the low elevation. Never seen this before 
    > with ISS. Time was approximately 21:07:15 UTC (Apr 15). Anyone seen this 
    > before?
    > - Marco
    > PS: at the earlier 19:34 UTC pass I was watching and photographing ISS in 
    > twilight too.
    > My new neighbours were in the courtyard, because of the unusual high 
    > temperatures. They asked me what I was doing and I explained.
    > At first they didn't want to believe me, thinking it was an airplane when 
    > I pointed them to the ISS passing. On second thought, they realized I had 
    > predicted it would pass, so probably I was right...
    > Next I could see a look in their eyes signalling probably something like: 
    > "Right. Somewhat a nutter, but not dangerous..."  ;-)
    > -----
    > Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    > Leiden, the Netherlands. 52.15412 N,  4.49081 E (WGS84), +0 m ASL
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    > -----
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