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ecliptic coordinate system

ecliptic coordinate system,anastronomical coordinate systemin which the principal coordinate axis is theecliptic, the apparent path of the sun through the heavens. The ecliptic poles are the two points at which a line perpendicular to the plane of the ecliptic through the center of the earth strikes the surface of the天球. The north ecliptic pole lies in the constellation Draco.

    The Columbia Electronic Encyclopedia,6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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    The Columbia Electronic Encyclopedia,6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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