Herschel, John F. W. (John Frederick William), Sir, 1792-1871 · London : Longman, Rees Orme · leaf 223
in one lunation, on the plane of theecliptic by that amount. To complete a sidereal revo-lution, then, it must still go on to describe an arc, A F,on its orbit, which will no longer, however, bring itexactly back to A, but to a point somewhat above it, orhaving north latitude. (345.) The actual… … CHAP. VI. ECLIPSES AND OCCULTATIONS. 217 contrary to the moons motion in its orbit (or fromeast to west) over a whole circumference of the eclip-tic. Of course, in the middle of this period the po-sition of the orbit must have been precisely reversedfrom what it was at the beginning. Its…
Astronomy
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