Ball, R[obert] S[tawell], Sir, 1840- [from old catalog] · New York, H. Holt and company · leaf 47
gh the centre of the earth a plane be drawnperpendicular to the line drawn from the centre of the earth to the celestial pole,this plane cuts the celestialsphere in a great circlewhich is called the celestialequator. Every point of theequator is 900 from the pole.Let p (fig. n) representthe… … Latitude. 29 called the declination of the star s. The angle p o s iscalled the polar distance of the star, so that the polardistance is the complement of the declination. If thestar be north of the equator, i.e. between the northpole and the equator, then the declination is positive ;but if the…
Astronomy
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