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- ...]] and longitude was required. Whereas latitude was easy to determine by [[celestial navigation]] using the elevation of the [[pole star]] or of the sun at noon ...rts are defined. The pole is the normal to the [[ecliptic]] nearest to the celestial north pole. Ecliptic latitude is measured from 0° to 90° north (+) or sou14 KB (2,162 words) - 17:17, 7 December 2006