NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Örjan Sandström
Date: 2012 Dec 13, 09:34 -0800
As reply to other part of your question, declination and sideral hour angle change.
SHA change over 1'/year on some stars (4 of the 57 navigation stars) and polaris even more.
SAH change to lower value on most navigation stars for a few value increases.
As for declination it changes less, more or less under 0.4'/year for the navigation stars.
lowest SHA change is Kochab (roughly +0.02'/year) highest is Atria (roughly -1.6'/year)
for declination we have "record breakers" Betelgeuse with roughly +0.01'/year and Denebola with -0.34'/year, if you wish for a book that list these changes (for most Nav stars) the book below is great.
I can recommend the book
Long term almanac 2000-2050
by Geoffrey Kolbe
Actually it is good for most celestial tasks unless planets and moon are involved.
To me sun and stars listed are 75% or more of what I need and rest is mainly Moon. Reason it does not list moon and planets, calculations would be quite hard on most USING a calculator and without...
i can appreciate astronomers of old, they had quite a hard time before electronic calculators, log tables of trig functions and fairly complex formulas are not known to be a very user friendly combination.
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