The declination of a celestial object is the exact equivalent of latitude.
Difference between Compass direction and True north.
in the lower margin on most large maps
True. Declination is the angular difference between true north (the direction of the North Pole) and magnetic north (the direction a compass points towards).
The discrepancy between the orientation of a compass and true north is known as declination. It is caused by the difference between the Earth's magnetic field and its geographic North Pole. To navigate accurately, this declination value needs to be factored in when using a compass for navigation.
Assuming the subject is magnetic declination the difference between the north pole and the true north pole this difference, is the magnetic declination, there is not information on what purpose it serves.
There can only be one Cartesian North.
lower margin of most maps
The declination of a celestial object is the exact equivalent of latitude.
Difference between Compass direction and True north.
in the lower margin on most large maps
True. Declination is the angular difference between true north (the direction of the North Pole) and magnetic north (the direction a compass points towards).
Inclination is measured as the angle at which the satellite crosses the equator while passing from the southern hemisphere to the northern hemisphere. Declination is the difference between magnetic North as reported by a compass and true North.
Magnetic declination or variation.
The discrepancy between the orientation of a compass and true north is known as declination. It is caused by the difference between the Earth's magnetic field and its geographic North Pole. To navigate accurately, this declination value needs to be factored in when using a compass for navigation.
The angle of the Sun in the sky, its maximum height above the horizon, depends on a measurement called its declination, which varies over a range of ±23.5 degrees. The Sun's declination is zero at the equinoxes, and is +23.5 degrees at the summer solstice (in the northern hemisphere), the longest day, and -23.5 degrees at the winter solstice, the shortest day. Declination is the Sun's latitude on the celestial sphere, and the declination of any obect is equal to the latitude of a set of points along a line of latitude on the Earth's surface at which it passes overhead.
magnetic variation