ASTRONOMICAL COORDINATE SYSTEMS

A coordinate system is a method of indicating positions. Each coordinate is a quantity measured from some starting point along some line or curve, called a coordinate axis. There are four basic systems of astronomical coordinates: the equatorial coordinate system, the altazimuth coordinate system, the celestial or ecliptic coordinate system, and the galactic coordinate system. These systems are based on three common principles: (1) all stars are considered to be located on the inner surface of the celestial sphere, the imaginary sphere centered on the earth and representing the entire sky; (2) each coordinate axis is a great circle on the celestial sphere; and (3) coordinate measurements of an object to be located are made along two great circles, one a coordinate axis and the other perpendicular to it and passing through the object. Measurements are made either in degrees or in hours.

____________________

The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

-3173-

Top...
Search the Library
Books
Journals
Magazines
Newspapers
Encyclopedia
Advanced Search
About Questia
Questia is the world's largest online academic library offering full-text books, journals, and articles on thousands of topics.

Join Now...
Questia Books and Articles on: Astronomical Coordinate Systems
We found: 2869 results
By media type:
 

Books:

 

2805  

 

Journal articles:

 

58  

 

Magazine articles:

 

4  

 

Newspaper articles:

 

0  

 

Encyclopedia articles:

 

2  
 

books on: Astronomical Coordinate Systems  - 2805 results

       More book Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Global Perspectives on the Ecology of Human-Machine Systems - Vol. 1
Book by John Flach, Peter Hancock, Jeff Caird, Kim Vicente; L. Erlbaum Associates, 1995
Subjects: Environmental Psychology, Human Engineering, Human-Machine Systems--Environmental Aspects
...intelligence" on behalf of systems. Goal-oriented behavior...back to the use of astronomical tables in early religion...Due to the need to coordinate and synchronize the...edge of a new view of coordinated coevolutionary processes...consider human-machine systems as interacting adaptive...
2.
Intelligent Tutoring Systems: Evolutions in Design
Book by Hugh Burns, James W. Parlett, Carol Luckhardt Redfield; Lawrence Erlbaum Associates, 1991
Subjects: Intelligent Tutoring Systems
INTELLIGENT TUTORING SYSTEMS Evolutions in Design INTELLIGENT TUTORING SYSTEMS Evolutions in Design Edited by Hugh...Cataloging-in-Publication Data Intelligent tutoring systems: evolutions in design / edited by Hugh Burns...
3.
Sociocybernetics: Complexity, Autopoiesis, and Observation of Social Systems
Book by Felix Geyer, Johannes Van Der Zouwen; Greenwood Press, 2001
Subjects: Autopoiesis, Cybernetics--Social Aspects, Social Systems
...Autopoiesis, and Observation of Social Systems Edited by Felix Geyer and Johannes...autopoiesis, and observation of social systems / edited by Felix Geyer and Johannes...0-313-31418-7 (alk. paper) 1. Social systems. 2. Autopoiesis. 3. Cybernetics-Social...
4.
The Concept of Indeterminism and Its Applications: Economics, Social Systems, Ethics, Artificial Intelligence, and Aesthetics
Book by Aron Katsenelinboigen; Praeger Publishers, 1997
Subjects: Chaotic Behavior In Systems, Free Will And Determinism, Probabilities, System Theory
...calculus" of assessing systems dynamics come in; these methods help coordinate and link the various stages...postulated that given the coordinates and the impulse of all...ignores the power of the systems transformation mechanism...
5.
Blowing Bubbles in the Cosmos: Astronomical Winds, Jets, and Explosions
Book by T. W. Hartquist, J. E. Dyson, D. P. Ruffle; Oxford University Press, 2004
Subjects: Astrophysical Jets, Solar Wind, Stars, New
...principle be obtained from astronomical observations. If we use...multiple (e.g., binary) systems. The evolution of stars...Supersonic Transition in an Astronomical Wind We assume the star or other astronomical source producing a wind...
More book Results: 1-10 11-20 21-30 31-40 41-50 >>

Top...
 

journal articles on: Astronomical Coordinate Systems  - 58 results

       More journal Results: 1-10 11-20 21-30 31-40 41-50 >>  
 
1.
Spatiotemporal Hierarchical Bayesian Modeling: Tropical Ocean Surface Winds
Journal article by Christopher K. Wikle, Ralph F. Milliff, Doug Nychka, L. Mark Berliner; Journal of the American Statistical Association, Vol. 96, 2001
Subjects: Atmosphere--Observations, Atmospheric research--Reports, Bayesian analysis--Usage, Bayesian statistical decision theory--Usage, Climatic changes--Research, Computer simulation--Usage, Cyclone forecasting--Research, Dynamical systems--Research, Earth sciences, Earth sciences satellites, Fractals--Research, Gibbs' equation--Usage, Mathematical models--Research, Meteorological research--Reports, Meteorology, Ocean-atmosphere interaction--Research, Ocean--Models, Oceanography, Oceans--Models, Satellites (Astronomical bodies)--Usage, Satellites--Usage, Space and time--Models, Spacetime--Models, Statistics (Data)--Research, Statistics (Mathematics), Statistics--Research, Tropics--Statistics, Turbulence--Models, Waves--Models, Winds--Research, Windstorm forecasting--Research
...Specifically, we use the conjugate gradient algorithm (e.g., Golub and Van Loan 1996, sec. 10.2). Especially in the case of sparse systems as arising in our model, this approach has computational advantages related to storage and efficiency. The basis of the algorithm...
2.
OD Values and Mormonism: Creating Adaptive Systems
Journal article by Mark L. McConkie, R. Wayne Boss; Public Administration Quarterly, Vol. 30, 2006
Subjects: Corporate culture, Management of change, Mormonism, Organization development, Organizational behavior, Public administration, Studies
...Church also has numerous hierarchical levels where program administrators meet in what are called "Correlation Councils," to coordinate church programs and activities. In this, the Church is a "business" adhering to the same coordination principles one observes...
3.
The Evolution and Modification of Brains and Sensory Systems
Journal article by George L. Gabor Miklos; Daedalus, Vol. 127, 1998
Subjects: Brain diseases--Causes of, Brain research--Usage, Brain--Electromechanical analogies, Cognitive science--Research, Medical genetics--Research
...Kyriacou, eds., Flexibility and Constraints in Behavioral Systems (New York: John Wiley and Sons, Ltd., 1994), 269-293. 10...Locations of Areas 9 and 46 and Relationship to the Talairach Coordinate System," Cerebral Cortex 5 (1995): 323-337. 17 Olaf Sporns...
4.
STATISTICAL GRAPHICS: Mapping the Pathways of Science
Journal article by Howard Wainer, Paul F. Velleman; Annual Review of Psychology, 2001
Subjects: Electronic design automation--Research, Interactive computer systems--Research, Multivariate analysis--Research
...examples of special-purpose coordinate systems in wide use before the end of the first...describe Descartes 1637 development of a coordinate system as an important intellectual...when data were available (e.g. Plinys astronomical data, Graunts survival data, Plots weather...
5.
The Use of Historical Bathymetric Charts in a GIS to Assess Morphological Change in Estuaries
Journal article by Daphne Van Der Wal, Kenneth Pye; The Geographical Journal, Vol. 169, 2003
Subjects: Bathymetric maps--Usage, Estuaries--Analysis, Estuaries--Environmental aspects, Geographic information systems--Usage, Geomorphology--Analysis
...equipment and navigation systems, should be taken...level of Lowest Astronomical Tide (LAT). This...research, a uniform coordinate system must be chosen...Converting spherical coordinates to Cartesian coordinates, as used in the...
More journal Results: 1-10 11-20 21-30 31-40 41-50 >>

Top...
 

magazine articles on: Astronomical Coordinate Systems  - 4 results

 
 
1.
Turn, Turn, Turn
Magazine article by Donald Goldsmith; Natural History, Vol. 115, December 2006
Subjects: Astronomy, Changes, Orbits, Seasons, Summer, Sun, Winter
...those days, astronomical observers relied...less, the two systems will once again...which record the coordinates of celestial objects. Those coordinate systems usually designate...and-since most coordinate systems depend on the...
2.
2005 ICMA Annual Award Recipients
Magazine article; Public Management, Vol. 87, September 2005
Subjects: City managers--Achievements and awards, Fitzpatrick, Daniel W.--Achievements and awards, International City Management Association--Achievements and awards, Keane, Mark E.--Achievements and awards, Kimball, Kurt F.--Achievements and awards, Professional associations--Achievements and awards, Trade and professional associations--Achievements and awards
...succeed if everyone involved can coordinate to work toward a common goal...problems. Insurance rates were astronomical because businesses could not...current silos of information systems, leading to more fragmentation...delivery channels, more redundant systems, and increased cost. In late...
3.
The Ethical Foundations of Health Care Reform
Magazine article by William F. May, William H. Foege; The Christian Century, Vol. 111, June 1, 1994
Subjects: Health care reform--Moral and ethical aspects
...Baltimore, St. Louis, Dallas, Los Angeles and many other, cities coordinate efforts between congregations and public health programs...inexorably toward health care reform, the attention is on systems and structures. Yet the most powerful force for the improvement...
4.
High-Performance Computing for All: Providing Access to High-Performance Computing for Small Businesses, Entrepreneurs, and Inventors Would Be a Boon to Innovation
Magazine article by Deborah Wince-Smith; Issues in Science and Technology, Vol. 25, Summer 2009
Subjects: Federal aid to research--Management, Government aid to research--Management, Information technology--Forecasts and trends, Information technology--Usage, Product development--Forecasts and trends, Scientific development--Forecasts and trends, Scientific development--Management, Supercomputers--Management, Supercomputers--Usage
...researchers can work with astronomical numbers of gene combinations...provider of drug delivery systems, magnetic resonance imaging...time, the government must coordinate agency efforts and work toward...structures; dysfunctional reward systems; a dearth of academic researchers...


Top...
 

encyclopedia articles on: Astronomical Coordinate Systems  - 2 results

 
 
1.
Astronomical Coordinate Systems
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
ASTRONOMICAL COORDINATE SYSTEMS A coordinate system is a method of indicating positions...or curve, called a coordinate axis. There are four basic systems of astronomical coordinates: the equatorial coordinate system , the altazimuth...
2.
Celestial Sphere
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...the celestial sphere. In astronomical coordinate systems , the coordinate axes are great circles on the celestial sphere. In most systems of this type, the reference...on the sphere, so the two coordinates needed to locate a body...


Top...
 About Questia   ::   Privacy   ::   Contact