Declination is the angular distance of a celestial object north or south of the celestial equator. It is measured in degrees, with positive values indicating north and negative values indicating south.
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Declination is one of the two coordinates used in the equatorial coordinate system to specify the position of an object in the sky.
It ranges from +90 degrees at the celestial north pole to -90 degrees at the celestial south pole.
Declination is analogous to latitude on Earth but applies to celestial objects.
A star with a declination of 0 degrees lies on the celestial equator.
To find a star's declination, astronomers use instruments like telescopes equipped with setting circles.