Last Updated：2025/12/08
Using an ancient star chart, he measured the oblique ascension, the arc of the equator intercepted between the first point of Aries and the point of the equator that rises with the star, to predict its rising time.
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Using an ancient star chart, he measured the oblique ascension, the arc of the equator intercepted between the first point of Aries and the point of the equator that rises with the star, to predict its rising time.
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