Note 194 — Chapter XIX · GEOLOGICAL TIME.—PROBABLE DATE OF THE GLACIAL EPOCH.
Reading edition
The following are M. Leverrier’s formulæ for computing the eccentricity of the earth’s orbit, given in his “Memoir” in the
Connaissance des Temps
for 1843:—
Eccentricity in (t) years after January 1, 1800 = √h2 + l2 where
h = 0·000526 Sin (gt + ß) + 0·016611 Sin (g1t + ß1) + 0·002366 Sin (g2t + ß2) + 0·010622 Sin (g3t + ß3) − 0·018925 Sin (g4t + ß4) + 0·011782 Sin (g5t + ß5) − 0·016913 Sin (g6t + ß6)
and
l = 0·000526 Cos (gt + ß) + 0·016611 Cos (g1t + ß1) + 0·002366 Cos (g2t + ß2) + 0·010622 Cos (g3t + ß3) − 0·018925 Cos (g4t + ß4) + 0·011782 Cos (g5t + ß5) − 0·016913 Cos (g6t + ß6)
g = 2″·25842 ß = 126° 43′ 15″
g1 = 3″·71364 ß1 = 27 21 26
g2 = 22″·4273 ß2 = 126 44 8
g3 = 5″·2989 ß3 = 85 47 45
g4 = 7″·5747 ß4 = 35 38 43
g5 = 17″·1527 ß5 = −25 11 33
g6 = 17″·8633 ß6 = −45 28 59