Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 170
e heliocentric longi-tude of a planet 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 deducsthe heliocentric longitude of the.… … M VFig. 66. In Fig. 66, let 8 be the sun, PGHK the orbit of a planet,CDEE the orbit of the earth, and NM the line of nodes of tk« 162 INCLINATION OP A TLANETs 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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