RE: Latitude and Nutation

[Lufkin, Brad]

According to Jean Meeus's Astronomical Algorithms, 2nd Edition, Chapter 22, page 143, 1st sentence: "The nutation...is a periodic oscillation of the rotational axis of the Earth around its mean position."

-----Original Message-----
From: Thaddeus Weakley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 16, 2004 4:12 PM
To: Lufkin, Brad; 'Sundial Mailing List'
Subject: Re: Latitude and Nutation

I am not familiar with the term nutation.  Can you elaborate on its meaning? 

 

Thanks,

 

Thad

42.2N 83.8W

"Lufkin, Brad" <[EMAIL PROTECTED]> wrote:

I know how to translate right ascension into geographic longitude (I
calculate the mean sidereal time at Greenwich and add the correction for the
nutation and then apply some simple formulas). The question is, how does
declination translate into geographic latitude? I know that they're almost
the same, but doesn't the nutation come into play? If so, how?
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