A Fundamental System based on observations of minor planets

Details A Fundamental System based on observations of minor planets A Fundamental System based on observations of minor planets

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980cemec..22...89h&link_type=abstract

(Symposium on Star Catalogues, Positional Astronomy and Celestial Mechanics, Washington, D.C., Nov. 30, 1978.) Celestial Mechani

Astronomy and Astrophysics

Astronomy

6

Asteroids, Astrometry, Astronomical Coordinates, Planet Ephemerides, Position (Location), Reference Stars, Astronomical Catalogs, Esa Satellites, Spaceborne Astronomy, Stellar Magnitude, Stellar Motions, Asteroids, Observations, Review, History, Techniques, Coordinate Systems, Position (Location), Motion, Data, Diameter, Absolute Magnitude, Catalogs, Optical Properties, Refraction, Physical Properties, Data Reduction, Astrometry, Astronomy

Scientific paper

Astronomers adopt a single system of star positions and motions for reduction of other observations. Relative observations of faint minor planets may make a significant contribution to the evaluation of systematic errors in this Fundamental System, and provide means of deriving a position system in ecliptic coordinates. New techniques, such as observations with the Space Telescope, must be evaluated for possible incorporation into a revision of the Fundamental System. A historical summary of the application of minor planet observations to the formation of astronomical coordinate systems is given. Then a project to investigate the systematic accuracy of the Fundamental System is outlined. Of the four observation types considered, 'crossing point' observations provide a unique stabilizing influence on any coordinate system incorporating them. Finally, some sources of systematic error and some methods of their treatment are discussed.

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