RE: Milstar 3

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Fri Feb 27 2009 - 14:17:54 UTC

  • Next message: Greg Roberts: "Optical 25 Feb 2009 Part 2"

    Peter G. wrote:
    
    > I had a good time visually tracking Milstar 3 with 8" f/6 dob 
    > reflector, 38X.  This is the type of object well-suited to my 
    > preferences.   Pretty bright, not too fast...
    > 
    > 25724 99 023A   0000 F 20090226005909720 17  25 0537011+091232 18  
    > 
    > 39.1169N   76.9489W   130m ASL
    
    Your observation appears to be of quite good accuracy, in both position and
    time, with a total residual of about 0.01 deg. I caution that this assessment
    could change a bit, as additional observations are made.
    
    I included your observation in the following analyses of recent observations by
    David Brierley, Scott Campbell, Mike McCants, Greg Roberts, Mike Waterman and
    Brad Young:
    
    Milstar 3       15.0  4.5  4.5  3.6 v
    1 25724U 99023A   09057.01437597 -.00000051  00000-0 -64068-3 0    08
    2 25724  28.2487 341.9258 2132323 341.5399  11.7316  9.37420086    03
    Arc 2008 Nov 16.08 - Feb 26.04, WRMS residuals = 0.016 deg
    
    1 25724U 99023A   09057.01438223 -.00000060  00000-0 -76442-3 0    04
    2 25724  28.2451 341.9439 2128955 341.4358  11.8944  9.37419840    09
    Arc 2008 Dec 15.84 - Feb 26.04, WRMS residuals = 0.022 deg
    
    The negative rate of decay indicates that perturbations currently are causing a
    net increase in orbital energy, causing the mean altitude to slowly increase. 
    
    Ted Molczan
    
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