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ecliptic celestial sphere astronomy equinoxes diagram ordinate circles precession
ecliptic plane earth vernal genii sun orbit celestial equator sphere earths along reference intersects autumnal orbits
ecliptic sankranti makar equinox astronomy coordinates galactic seasons equator sphere autumnal vernal astrology maansverduistering using coordinate von
ecliptic celestial equator earth sphere plane sun between navigation obliquity rotation
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ecliptic astronomy coordinates obliquity nodes positional node intersect circles
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