Re: NOAA-13 question (and other things)

From: Ralf Vandebergh (ralf.vandebergh@home.nl)
Date: Sat Jul 17 2010 - 11:31:36 UTC

  • Next message: Jim Nix: "JN 9633 obs July 17 & PPAS"

    Thanks Ed, that's the 2004 message I referred too but forgot to link it.
    Thanks for the additional information.
    
    Ralf
    
    ----- Original Message ----- 
    From: "Ed Cannon" <edcannonsat@yahoo.com>
    To: "post seesat" <SeeSat-L@satobs.org>
    Sent: Saturday, July 17, 2010 10:38 AM
    Subject: re: NOAA-13 question (and other things)
    
    
    > Here's a message in which I reported on NOAA
    > 13 (93-050A, 22739) back in August 2004:
    > 
    > http://www.satobs.org/seesat/Aug-2004/0174.html
    > 
    > Below are my times for NOAA 13 for 15 July UTC.
    > Note that by #57 it was behaving such that I
    > could only reliably see two of the four flashes,
    > and by the end only two were visible at all.  
    > None of the flashes was very bright on this 
    > pass.
    > 
    > 48   ____     2:19:22.34 (4:59:22.34 UTC)
    > 49   1.78          24.12
    > 50   1.75          25.87
    > 51   1.56          27.43
    > 52   1.72          29.15
    > 53   1.93          31.08  
    > 54   1.60          32.68
    > 55   1.59          34.27
    > 56   1.68          35.95
    > 57   5.16          41.11  
    > 58   1.87          42.98
    > 59   4.98          47.96
    > 60   1.79          49.75
    > 61   5.21          54.96
    > 62   1.69          56.65
    > 63   4.97     2:20:01.62
    > 64   1.76           3.38
    > 65   5.13           8.51
    > 66   1.78          10.29
    > 67   5.03          15.32
    > 68   1.76          17.08
    > 69   5.13          22.21
    > 70   1.78          23.99
    > 71   5.04          29.03
    > 72   1.88          30.91
    > 73   4.96          35.87
    > 74   1.75          37.62
    > 75   5.13          42.75
    > 76   1.71          44.46  (5:00:44.46 UTC)
    > 
    > The night before, it was doing more of a
    > flash-flash-flash-miss pattern, but I lost
    > my times for that one (mistaken button 
    > click on the stopwatch).  
    > 
    > So much time has elapsed and I've changed
    > computers enough that I can't remember how
    > I used to do PPAS reports, except that I 
    > used some neat little software program to 
    > enter them.
    > 
    > Regarding other neat flashers, for any who
    > may not yet be aware, if you like EGP and
    > USA 32 and USA 81, then you should have a
    > look at Ume 1 (08709, 76-019A) and Ume 2
    > (10675, 78-018B [by the way Spacetrack's
    > elements say B is the rocket and A is the
    > payload]), if you have not already.  They 
    > both sometimes (always?) exhibit spans of 
    > regular flashes alternating with very 
    > rapid, chaotic flashing, sometimes bright 
    > enough to be seen without magnification.  
    > 
    > Regarding USA 186 -- no wonder Mike and I
    > didn't see it Thursday evening!  I thought
    > it was just too faint for me with my 8x42
    > binocular, but now we know why Mike didn't 
    > see it -- it wasn't there.
    > 
    > One more thing.  Totally by accident I
    > stumbled upon a Brazilian satellite 
    > tracking website which may be of interest
    > to some SeeSat-L members.  If you click 
    > the US flag "Track Satellites Worldwide" 
    > at the upper left, it's almost all in 
    > English, but other parts of it are in 
    > Portuguese.  It uses a database of 156 
    > objects, which may be the visual.txt file 
    > that's hosted on the Celestrak site.  By
    > default it tracks ISS.  You can adjust it
    > to your location.
    > 
    > http://www.satview.com.br/
    > 
    > It has an explanation of the illumination
    > of passes that I didn't quite follow.  It
    > says:  "SHA - The satellite is in the Earth 
    > shadow (or terminator), the line between 
    > day and night."  But in a different output
    > it also has "SIM" or "NOT" to indicate 
    > "yes" or "no" to the satellite being 
    > illuminated by the Sun.  It gives passes 
    > in shadow because it considers radio 
    > observation as well as visual.  
    > 
    > Ed Cannon - Austin, Texas, USA
    > 
    > 
    > 
    >       
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    > 
    
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