Declination is the angle between an object in the sky and the celestial equator. It is similar to latitude on Earth, helping astronomers locate stars and other celestial bodies. Declination is measured in degrees, with positive values indicating positions north of the celestial equator and negative values indicating positions to the south. In astronomy, declination is a key component of the equatorial coordinate system, which also includes right ascension. This system allows for precise tracking of celestial objects, making it easier for astronomers to observe and study them over time.