Fundamental reference systems - Past, present, and future

Details Fundamental reference systems - Past, present, and future Fundamental reference systems - Past, present, and future

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985cemec..37..199s&link_type=abstract

Celestial Mechanics (ISSN 0008-8714), vol. 37, Nov. 1985, p. 199-207.

Statistics

Computation

5

Astrometry, Astronomical Catalogs, Celestial Reference Systems, Reference Stars, Accuracy, Position (Location), Time Measurement

Scientific paper

Problems concerning the fundamental reference system (FRS) for astronomical observations are reviewed, and improvements are suggested. The present FRS, based on the FK5 catalog, is characterized in detail. Aspects considered include the observational basis, the approximations involved, accuracies, theories, computational methods, definitions, time scales, and relativity. The ideal FRS is seen as one which is inertial, valid for any time, observationally determinable, wavelength and color independent, independent of and unlimited by magnitude, platform independent, unlimited by observational accuracies, and rigorously theoretically defined. The factors to be weighed in choosing the fiducial point of a future FRS are also discussed.

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