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 system, the other being hour angle. Declination's angle is measured north or south of the celestial equator, along the hour circle passing through the point in question.
Declination is measured from the celestial equator. It extends from 0° at the celestial equator to +90° at the north celestial pole and from 0° at celestial equator to -90° at the south celestial pole. While declination does not use the designation N and S, latitude and declination are nonetheless closely related coordinates.
We can locate any object on the celestial sphere by giving it two coordinates, called the Right Ascension and the Declination. These are called celestial coordinates. Analogous to the longitude on Earth, the Right Ascension of an object on the celestial sphere is measured along the celestial equator, as the angular distance ...
If you are in the southern hemisphere, the south celestial pole (the SCP) is above the horizon, the NCP below it. A star on the celestial sphere seems to go around the observer on a daily path (red circle). The perpendicular angle of a star north or south of the celestial equator is given by its declination, indicated by lower ...
Declination equals the angle of a star away from the Celestial Equator with the vertex (the common endpoint of the angle) being the center of the earth). A celestial body on the Celestial Equator has a declination of 0 and rises due East and sets due West. (The sun at Vernal and Autumnal Equinox has a declination of 0.).
Observer's Latitude, Altitude of North Celestial Pole (Az.=0), Altitude of South Celestial Pole (Az.=180), Altitude of Celestial Equator (Az.= 0 or 180), Declination of North horizon, Declination of South horizon, Declination of Zenith. 0 (Ecuador), 0, 0, 90, 90, -90, 0. 30 (Caribbean), 30, -30, 60 (Az. 180), 60 (i.e. 30 degrees ...
Jul 20, 2006 ... Imagine the lines of latitude and longitude ballooning outward from the Earth and printing themselves on the inside of the sky sphere, as shown at right. They are now called, respectively, declination and right ascension. Directly out from the Earth's equator, 0° latitude, is the celestial equator, 0° declination.
Now imagine the Earth's Equator extended out to infinity, the corresponding point on the celestial sphere is the celestial equator. Just as the angle between the pole and the equator on Earth is a right angle, the same is true of the celestial sphere. For this reason points on the celestial equator are said to have a declination of ...
B Question 2: What is the declination of an object that lies equidistant between the celestial equator and the south celestial pole? a. +45° b. -45° c. +60° d. -30° A Question 3: What is the right ascension of an object exactly on the vernal equinox? a. 23h 59m 59s b. 12h 00m 00s c. 00h 00m 00s d. 24h 24m 24s B Question 4: ...