In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate...

that the solar declination would decrease linearly with time. Eventually, the Sun would be directly above the South Pole, with a declination of −90°; then...

coordinate used in astronomy Magnetic declination, angle that must be added or subtracted in the use of compass for geography Grid declination, angle between...

on its meridian measured from the celestial pole, similar to the way declination (dec, δ) is measured from the celestial equator. Polar distance in celestial...

of astronomy focuses on the contributions civilizations have made to further their understanding of the universe beyond earth's atmosphere. Astronomy is...

Redshift μ - proper motion π - parallax J - epoch α - Right Ascension δ - Declination λ - Ecliptic longitude β - Ecliptic latitude l - Galactic longitude b...

In astronomy, the hour circle is the great circle through a given object and the two celestial poles. Together with declination and distance (from the...

Spherical astronomy, or positional astronomy, is a branch of observational astronomy used to locate astronomical objects on the celestial sphere, as seen...

in two parts, in 1965 (for declinations +20 to +40) and 1967 (declinations -7 to + 20 and +40 to +80), by the Radio Astronomy Group of the University of...

Babylonian astronomy was the study or recording of celestial objects during the early history of Mesopotamia. The numeral system used, sexagesimal, was...

and sistere ("to stand still"), because at the solstices, the Sun's declination appears to "stand still"; that is, the seasonal movement of the Sun's...

DDd is the Declination in degrees and tenths of a degree, e.g. 8C 0014+861 for a source at Right Ascension 00 14 and 86.1 degrees Declination in 1950 coordinates...

a maximum angle of approximately 20 arcseconds in right ascension or declination. The term aberration has historically been used to refer to a number...

of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is...

south. For example, the north celestial pole has a declination of +90°. The origin for declination is the celestial equator, which is the projection of...

latitude with the formula. Latitude = (90° – noon altitude + declination) The declination of major stars are their angles north and south from the celestial...

Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies. The first detection of radio waves from an astronomical...

given in the spherical polar coordinate system of right ascension and declination, together with the distance from the origin if applicable. Some of the...

star given its declination and hour angle at a specific location, modify the formula for a spherical Earth. Replace φ2 with declination and longitude difference...

In astronomy, a conjunction occurs when two astronomical objects or spacecraft appear to be close to each other in the sky. This means they have either...

("sun fast") vs. declination of the Sun. The north–south component of the analemma results from the change in the Sun's declination due to the tilt of...

ascension) is paired with a second perpendicular axis of motion (known as the declination). The equatorial axis of the mount is often equipped with a motorized...

Torres, New proper-motion stars south of declination -40 deg and right ascension between 00 H and 04 H 30 M, Astronomy and Astrophysics Supplement Series,...

may include those that lie between declinations 45° north and 45° south, or those that pass through the declination range of the ecliptic (or zodiac) ranging...

Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes...

Medieval Islamic astronomy comprises the astronomical developments made in the Islamic world, particularly during the Islamic Golden Age (9th–13th centuries)...

north is called the magnetic declination. Most map coordinate systems are based on true north, and magnetic declination is often shown on map legends...

east or true west when its declination is of the same name as the ship's latitude and less than the latter. When the declination of the body is of the same...

In astronomy, a planisphere (/ˈpleɪ.nɪˌsfɪər, ˈplæn.ɪ-/) is a star chart analog computing instrument in the form of two adjustable disks that rotate on...

Astronomy in China has a long history stretching from the Shang dynasty, being refined over a period of more than 3,000 years. The ancient Chinese people...