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Right ascension - Wikipedia


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 ...

What Are Celestial Coordinates - Understanding Celestial Coordinates


Jul 20, 2006 ... Newcomers to astronomy can get thrown for a loop when they first encounter declination and right ascension, the terms astronomers use to ...

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 ...

How To Read Sky Coordinates – One Minute Astronomer


Jun 15, 2009 ... The celestial equivalent to longitude is called right ascension. It's measured not in degrees but in “hours”, from 0h to 24h. Astronomers cooked ...

Declination and Right Ascension - AstronomyGCSE.co.uk


Declination and Right Ascension. We saw in Unit 1 how we use latitude and longitude to locate a point on the surface of the Earth. How do we locate a point in ...

coordinate - Why is right ascension measured in hours? - Astronomy ...


May 20, 2014 ... When viewing star maps in Stellarium, I noticed that the meridians of the equatorial grid were denoted in hours and not degrees, and that ...

right ascension | astronomy | Britannica.com


Sep 30, 2008 ... Right ascension, in astronomy, the east–west coordinate by which the position of a celestial body is ordinarily measured; more precisely, it is ...

Right Ascension LLC


Simple Menu. Navigation Item Here; Navigation Item Here; Navigation Item Here; Navigation Item Here; Navigation Item Here ...

Astronomy For Beginners...Astronomy Basics...The Celestial Sphere


Oct 1, 2014 ... Right Ascension (RA) is the celestial equivalent of longitude. Just as longitude doesn't have so much of a natural significance, so was arbitrarily ...

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
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