Re: Question about Flashes not listed at Heavens-Above.com

From: Robert Holdsworth (robbonz1@xtra.co.nz)
Date: Wed Oct 08 2008 - 17:28:03 UTC

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    http://www.calsky.com  does list  Iridium satellites which are "spare or 
    status is unknown."
    
    As a matter of fact yesterday morning our time it listed consecutive flares 
    from the "active" Iridium 40 and the "spare" Iridium 98 with less than one 
    minute between flares.   http://www.rod.sladen.org.uk/iridium.htm confirms 
    98 as a spare.
    Both satellites are in the same plane.
    
    Both were excellent flares, Calsky predicted that the  second one would be 
    brighter though it stated that brightness prediction may be unreliable.
    
    In fact 40 was brighter and visible for longer than 98. I would put 40 at 
    close to or brighter than the predicted mag -4 , but 98 an order of 
    magnitude or two dimmer.
    
    
    Robert Holdsworth
    Wainuiomata
    New Zealand
    174.948E
    41.261S
    
    ----- Original Message ----- 
    From: "Thomas Ashcraft" <ashcraft@heliotown.com>
    To: <SeeSat-L@satobs.org>
    Sent: Tuesday, October 07, 2008 6:45 AM
    Subject: Re: Question about Flashes not listed at Heavens-Above.com
    
    
    > Follow-up:
    >
    > The satellite has been identified as Iridium 17.
    >
    > Also, I learned that heavens-above.com only lists Iridiums that are in 
    > control.  This is very helpful information and I will pass this on to my 
    > fellow meteor observers.
    >
    > Clear skies,
    > Thomas Ashcraft
    >
    >
    >
    > Thomas Ashcraft wrote:
    >>
    >>
    >> Some meteor observers, including myself, who operate all-sky cameras 
    >> often get bright negative magnitude satellite-like flashes that are not 
    >> listed at www.heavens-above.com.  Am I right in assuming that 
    >> heavens-above.com does not list all satellites that create negative 
    >> magnitude flashes?
    
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