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    Re: Modern Lunars
    From: Paul Hirose
    Date: 2016 Sep 27, 13:00 -0700

    On 2016-09-27 1:33, Antoine Couëtte wrote:
    > I mentioned this sad fact to **Bureau des Longitudes** in writing 5 years 
    ago (see enclosed document :  " *110303 Quelle est la Précession utilisée par 
    Serveur IMCCE .pdf* "  ) , but I got no reply at all ... I regret my dear 
    Friend *Pierre Bretagnon *who had just passed away because - had I mentioned 
    this unwelcome fact to him - things woud have been straightened up by long 
    now.
    
    I sent them an email on that a few years ago, with no response.
    
    The JPL HORIZONS calculator also uses the 1976/80 model, but it applies
    the pole offsets published by the IERS. These correct for the difference
    between the program's precession / nutation model and the actual pole.
    
    > I am suggesting the following steps: please indicate to me the actual Moon 
    Apparent Equatorial Coordinates which you are computing and using for our now 
    [*World*] famous Lunars #2, #3 and #4, i.e. for Sep 07th 1855 at 08:05:00.000 
    TT. Also please indicate exactly which deltaT value you are using.
    
    07 SEP. 1855 , ΔT = + 7.68 s
    UT1 = 08h04m52.32s (TT=08h05m00.00s)
    
    8.169499h +25.29193° geocentric apparent RA, dec. (DE406, IAU 2006 /
    2000B precession / nutation)
    
    

       
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