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Right ascension


Right ascension (abbreviated RA; symbol α) is the angular distance measured eastward along the celestial equator from the vernal equinox to the hour circle of  ...

Right ascension


Term: right ascension. The stars on the celestial sphere are like cities on the globe. Cities are located on the globe using latitude and longitude. Longitude says ...

Celestial Equatorial Coordinate System - Basic Coordinates and ...


The second coordinate in the celestial equatorial system is right ascension. It is analogous to (but not the same as) longitude. Much has Greenwich is the ...

What Are Celestial Coordinates - Understanding Celestial Coordinates


Jul 20, 2006 ... "Right ascension" and "declination" tell you where your telescope is pointed in the sky. But what are celestial coordinates, really?

Celestial Coordinate System


The celestial equivalent of longitude is called right ascension. Right ascension can be measured in degrees, but for historical reasons it is more common to ...

Right Ascension & Declination Astronomical Coordinate System


Right Ascension and Declination are a system of coordinates used in astronomy to determine the location of stars, planets and other objects in the night sky.

Right ascension | Define Right ascension at Dictionary.com


Right ascension definition, the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial  ...

What are RA and DEC? (Intermediate) - Curious About Astronomy ...


Jun 28, 2015 ... RA (right ascension) and DEC (declination) are to the sky what longitude and latitude are to the surface of the Earth. RA corresponds to ...

Lecture 1: Introduction to Astronomy 250


Right ascension is analogous to longitude, is usually measured in units of time: hours, minutes, seconds. The zero-point for right ascension is the Vernal ...

coordinate - Could someone explain RA/dec in simple terms ...


Sep 24, 2013 ... "right ascension" is measured rightward, (from your left to your right if you face south in the northern hemisphere,) from the zero-degrees half of ...

right ascension
the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial poles and a given point on the celestial sphere, expressed in degrees or hours.
Source: Dictionary.com
right ascension | Define right ascension at Dictionary.com
dictionary.reference.com/browse/right ascension
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