Long-period variations
Variations for a very long period (1,000,000 BC to 1,000,000 AD)
According
to Meeus
(More Mathematical Astronomy Morsels, Chapter 33) Simon et
al. published in 1994 an expression for the eccentricity
e:
where
T is measured in thousands of Julian years from 2000:
The
time span of validity is from 4000 BC to 8000 AD.
-0.0000000002*T4+0.0000000003*T5
Compute the eccentricity by JavaScript:
Write a table by JavaScript:
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Variations for a very long period (1,000,000 BC to 1,000,000 AD)
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(c) 2006 J. Giesen
2006, Mar 21