RE: USA 144 decoy brightness variation

From: Ted Molczan (
Date: Tue Sep 07 2010 - 16:44:44 UTC

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    Marco Langbroek wrote:
    > Now done, results here:
    > Period 60 seconds. Interestingly, like on July 20th I again captured a specular 
    > glint at the bottom of one of the minima. This suggests there is a flat 
    > reflective surface on one of the smaller sides of this enigmatic object.
    Very interesting, Marco. I have updated the plot of the period of variation over time. It had been
    decreasing ~8 s annually, but the rate appears to have decreased considerably over the past year, so
    it may be approaching a minimum. I have plotted it with a linear fit and a 2nd order polynomial fit;
    I doubt there is any statistical significance, but the latter seems closer. Time will tell.
    Ted Molczan
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