Angular Distance

In mathematics (in particular geometry and trigonometry) and all natural sciences (including astronomy, geophysics, etc.), the angular distance (angular separation, apparent distance, or apparent separation) between two point objects, as observed from a location different from either of these objects, is the size of the angle between the two directions originating from the observer and pointing towards these two objects. Angular distance (or separation) is thus synonymous to angle itself, but is meant to suggest the (often large or unknown) linear distance between these objects (for instance stars, as they are observed from Earth).

Read more about Angular Distance:  Measurement, Equation

Other articles related to "angular distance, distance, angular":

Angular Distance - Equation
... In order to calculate the angular distance in arcseconds for binary star system, extrasolar planets, solar system objects and other astronomical objects, we use orbital distance (semi-major axis) in AU ...
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... It is part of a group of three angular units, zhang (also written chang), chi (“foot”) and cun (“inch”) ... The angular units are not the ones used to determine stars' coordinates, which are given in terms of du, an angular unit corresponding to the average angular distance travelled by then sun per day, which ... The use of different angular units can be surprising, but it is hardly different to the current situation in modern astronomy, where the angular unit used to measure ...
Transverse Mercator Projection - Spherical Transverse Mercator - Normal and Transverse Spherical Projections
... Scale at an angular distance of 5° (in latitude) away from the equator is less than 0.4% greater than scale at the equator, and is about 1.54% greater at an angular distance of 10° ... Scale at an angular distance of 5° (in longitude) away from the central meridian is less than 0.4% greater than scale at the central meridian, and is about 1.54 ...

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