Willson, Robert Wheeler, 1853-1922 · Boston, New York Ginn & company · leaf 170
uation of center, ^ Longig find the correspond-ing value of the trueanomaly which enablesus to place the planet Egat the proper position*in its orbit. Thus, if the earthsmean anomaly is 70°,we find by the table,page 174, that the equa-tion of center is -|-1°.8, r iij. oo and hence the true anomaly… … 158 LABORATORY ASTRONOMY We may find the mean anomaly if we know the number of dayselapsed since perihelion, and the mean daily motion along the orbit.The fact that the planets move very nearly in the ecliptic, so that themotion in the real and curtate orbit is very nearly the same, makesit easier…
Astronomy
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