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Sun semidiameter
From: Bill B
Date: 2007 Apr 14, 17:40 -0400

Looking at Frank's site

http://www.clockwk.com/lunars/nadata_v5.html

and Sun and Polaris Ephemerii�for Land Surveyors

http://www.cadastral.com/2007ephs.htm

for 14 May 2007 I find agreement in the semidiameter of the sun; 15!83
(Frank) and  15' 49.6" = 15!83 (Cadastral).  Yet the nautical almanac lists
SD as 15.9.  I see this happening on other dates as well.  I would expect it
could happen near a rounding, point, say 15!9 one page and 16!0 the next,
but that thought does check out.

Why the difference in SD?

Bill


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