lower margin of most maps
displayed on a nautical chart that shows the amount and direction of the magnetic declination for a specific location. It is used by navigators to correct compass readings and determine true north.
There can only be one Cartesian North.
lower margin of most maps
in the lower margin on most large maps
The declination diagram
The declination diagram
The declination diagram
The declination diagram
The declination of the star Arcturus is 19 degrees, 11 minutes, while Polaris has a declination of 89 degrees 15 minutes. Their angular separation is the distance between them, approximately 71 degrees.
That's the "magnetic declination". Since the true north pole and the magnetic north pole are located at different points on the earth, the declination is a different angle in different places on earth.
A declination is a term used in astronomy to describe the angular distance of a celestial object from the celestial equator. For example, the declination of the star Sirius is approximately -16.7 degrees, indicating its position relative to the celestial equator.
Declination is the angular measurement of a celestial body north or south of the "celestial equator". You can think of it as the equivalent of "celestial latitude". The "fixed stars" don't have any change in declination. (Well, they _DO_, but only very slightly and VERY slowly.) The Sun, Moon, and planets all have their own paths within the solar system, so their declinations will change on a day-to-day basis. The Sun is at a declination of zero precisely at the time of the equinox. In September, the Sun's declination is decreasing, and it goes negative immediately after the moment of the equinox. This is generally on September 21, but this can vary a day either way depending on the cycle of leap years.
Declination (positive and negative respectively) is the angular distance between north and south of the Celestial Equator.