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position angle


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The direction in which one object lies relative to another on the celestial sphere, such as the two components of a double star or the axis of rotation of the Sun or a planet. Position angle is measured in degrees from north via east, although for the axial inclination of the Sun it is measured positive (+) to the east and negative (−) to the west (see diagram).

position angle: The direction of one object, star B, relative to another, star A, on the celestial sphere (on which east is anticlockwise from north)

Subjects: Astronomy and Astrophysics.


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