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    Re: Polaris SHA
    From: Bill B
    Date: 2008 Sep 19, 23:22 -0400

    Bill wrote:
    
    >> I did not expect SHA to vary so much and move up and down from year
    >> beginning to year end.  I regarded SHA as an angular distance from the first
    >> point of Aires.  While the reference point changes with precession, the
    >> relationship to the reference point remains relatively constant noting the
    >> change of relationships due to proper motion and shifts (relativity) from
    >> the Earth moving at nominally 70,000 mph around the Sun and their
    >> relationships to the celestial sphere you have mentioned in the past.
    >>
    >> If I read you correctly, any small changes in the relationships between the
    >> stars (for many reasons) that might seem minor on a star ball or a
    >> conceptual celestial sphere are magnified by the coordinate
    >> construct/system.
    >>
    Michael Dorl responded:
    
    > Does it make sense to think of it this way?  Any point close to the
    > coordinate system origin
    > can experience large relative coordinate shifts when the origin is moved.
    
    Clearly NOT ;-)
    
    Bill B.
    
    
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