The elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J. (Charles Joyce), 1839-1917 · New York, J. Wiley & sons; · leaf 166
heliocentric longi-tude of a nlanet when at its node differs from the geocentriclongitude (which may be obtained directly from observation),excepting only in case the earth itself happens at that time tobe on the line of nodes. We must therefore be able to deducethe heliocentric longitude of the… … M r r.r, In Fig. 66, let S be the sun, POHK the orbit of a planet,CDEE the orbit of the earth, and NM the line of Dodes of &« 162 INCLINATION OF A PLANETS ORBIT. planet. Let the vernal equinox lie in the direction EV or SV,Let E be the position of the earth when the planet is on the lineof…
Astronomy
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