Re: Sat Obs

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Mon Jun 07 2004 - 22:00:49 EDT

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    Brad Young reported:
    
    > Also saw ERS-1 last night (21574 or 1991-050-A) with an apparent 
    > period of 15 seconds from mag 4 to 8 and back...is this its 
    > documented period?
    
    Here's one visual report of what Ted identified as ERS-1 tumbling:
    
    http://satobs.org/seesat/May-2002/0033.html
    
    ERS-1 failed in 2000:
    
    http://earth.esa.int/rootcollection/eeo/ers_end.html
    
    It was reported (by the ESA operators I presume) to be tumbling 
    then at 10 RPM:
    
    http://satobs.org/seesat/Mar-2000/0191.html
    
    Here's a page with an illustration (which Ron Lee sent to SeeSat-L):
    
    http://www.esa.int/export/esaSA/GGGWBR8RVDC_earth_0.html
    
    In April 2000 both Tristan Cools and Björn Gimle reported a very 
    slow tumble:
    
    http://satobs.org/seesat/Apr-2000/0108.html
    http://satobs.org/seesat/Apr-2000/0109.html
    
    Some brief visual flares have been reported:
    
    http://satobs.org/seesat/Apr-2003/0179.html
    http://satobs.org/seesat/Aug-2000/0318.html
    
    Here's the latest elset:
    
    ERS 1
    1 21574U 91050A   04158.79990740  .00000022  00000-0  22410-4 0  9927
    2 21574  98.3837 225.9232 0034937 164.6370 195.5893 14.35433986674617
    
    We have rain tonight and very likely the next two nights.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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