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must be my settings, but I don't seem to be able to download the
spreadsheet.

Would you have another way of making it available?

thanks

Ronald

On Oct 31, 10:51 pm, d walden  wrote:
> It is of course possible, as has been pointed out, to calculate the latitude 
and longitude of the points of intersection of two circles of position 
directly with neither an estimated nor an assumed position.  Nor in fact are 
altitudes and intercepts or any plotting needed.  The intersection of cones 
method, described by Frank in the discussion of latitude by lunars, and shown 
in a previously posted FORTRAN and Maxima example can be used.  A few minor 
changes to the programs posted are needed.
>
>   The problem is, in fact, slightly easier.  It can be done with 
intersecting planes.  The attached little spread sheet is an example of how.  
One enters with the altitude, declination, and GHA of two bodies.  Out come 
the latitudes and longitudes of the two intersection points.  If you have 
three bodies, pick a different pair, and two of the points should wind up 
quite close.  There you are.
>
>   Seems to be working for me, but no guarantees.
>
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>
>  vanAllenFIX#2.xls
> 22KDownload


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