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- Position_angle abstract "Position angle, usually abbreviated PA, is a measurement derived from observing visual binary stars. It is defined as the angular offset in degrees of the secondary star to the primary, relative to the north celestial pole.As the example illustrates, if one were observing a hypothetical binary star with a PA of 135 degrees, that means an imaginary line in the eyepiece drawn from the north celestial pole (NCP) to the primary (P) would be offset from the secondary (S) such that the NCP-P-S angle would be 135 degrees.When graphing visual binary orbits, the NCP line is traditionally drawn downward—that is, with north at bottom—and PA is measured counterclockwise, from 0 to 359 degrees.Also the proper motion angle (see proper motion) is sometimes called the position angle.The definition of position angle is also extended to apply to extended objects like galaxies, where it refers to the angle made by the major axis of the object with the NCP line.".
- Position_angle thumbnail Position_angle.svg?width=300.
- Position_angle wikiPageExternalLink PRA1-PA75,M1.
- Position_angle wikiPageExternalLink orbits.htm.
- Position_angle wikiPageID "4206717".
- Position_angle wikiPageRevisionID "540669870".
- Position_angle hasPhotoCollection Position_angle.
- Position_angle subject Category:Celestial_coordinate_system.
- Position_angle comment "Position angle, usually abbreviated PA, is a measurement derived from observing visual binary stars.".
- Position_angle label "Angle de position".
- Position_angle label "Angolo di posizione".
- Position_angle label "Kąt pozycyjny".
- Position_angle label "Position angle".
- Position_angle label "Positionswinkel".
- Position_angle label "Ángulo de posición".
- Position_angle label "Позиционный угол".
- Position_angle label "位置角".
- Position_angle sameAs Positionswinkel.
- Position_angle sameAs Ángulo_de_posición.
- Position_angle sameAs Angle_de_position.
- Position_angle sameAs Angolo_di_posizione.
- Position_angle sameAs Kąt_pozycyjny.
- Position_angle sameAs m.0bpzg7.
- Position_angle sameAs Q2105737.
- Position_angle sameAs Q2105737.
- Position_angle wasDerivedFrom Position_angle?oldid=540669870.
- Position_angle depiction Position_angle.svg.
- Position_angle isPrimaryTopicOf Position_angle.
