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The System of the PPM Catalogue

Published online by Cambridge University Press:  19 July 2016

Siegfried Roeser
Siegfried Roeser*
Affiliation:
Astronomisches Rechen-Institut Mönchhofstr. 12 - 14 D-6900 Heidelberg Federal Republic of Germany

Abstract

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The coordinate system of the Catalogue of Positions and Proper Motions (PPM) was constructed as an extension of the FK5 sytem to higher star densities and fainter magnitudes. Zonal deviations from the FK5 were minimised on scales of 7 × 7 square degrees via AGK3R and CMC catalogues. Compared with these catalogues, no magnitude equation was found for stars brighter than m(pg) = 10.5.

Type
Part 4: Realization and comparison of reference frames
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 469 - 478
Copyright
Copyright © Kluwer 1990 

References

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