Here are a few references in books, I'm sure there are others on the web:
"Astronomical Algorithms" by Jean Meeus, Second Edition, Chapter 28. "Explanatory Supplement to the Astronomical Almanac", Seidelmann et. al, Section 9.311 "Spherical Astronomy", by Robin Green, 1985, Section 10.6 From: [email protected] [mailto:[email protected]] On Behalf Of Jos Kint Sent: Sunday, February 08, 2009 8:38 AM To: [email protected] Subject: earth eccentricity Hello sundialists around the world! Who can help me? I am looking for the algebraic relation between the Equation of time and the eccentricity of the earth orbital. It will help me for calculating this eccentricity with my own sun dial. Chris Lusby Tailor gave me a nice hint with the Ptolemaios model, which was rather effective ( I found e= 0,0172 instead of 0,0167) , but I think that there must be also some algebraic solution to the problem. Who is aware of such a solution? Jos Kint Email: [email protected]
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