Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 75
68 PRIMARY ASTRONOMY. 30 3. Upon what does the apparent Longitude of a planet depend?Upon its position in the ecliptic and the point fromwhich it is viewed. 304. What is Geocentric* Longitude ? It is the apparent longitude of a planet when viewedfrom the Earth. 305. What is Heliocentric] Longitude… … [In this cut, the planet B, when viewed from the Earth at A, seems to be in the signo^ ; but when viewed from the Sun, it appears to be in JJ. Again: when at C, herapparent longitude from the Earth is in fr|; when from the Sun, she appears to be in/ . The reader will not only perceive the…
Astronomy
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