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per century, the speed of general precession. However, for stars near the ecliptic poles, the rate of change of ecliptic longitude is dominated by the slight movement of the ecliptic (that is, of the plane of the Earth's orbit), so the rate of change may be anything from minus infinity to plus infinity depending on the exact position of the star.;Ecliptic latitude
:Ecliptic latitude or celestial latitude (symbols: heliocentric , geocentric measures the angular distance of an object from the ecliptic towards

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