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PPM: A Tool for Astronomers
Published online by Cambridge University Press: 19 July 2016
Abstract
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The new catalogue of Positions and Proper Motions (“PPM”) was compiled to replace the AGK3 and SAO catalogues as an astrometric reference on the northern celestial hemisphere. It provides more than 180 000 reference stars, is on the system of FK5 (J2000.0) and has a higher accuracy than the two older catalogues.
Some properties of PPM and its High-Precision Subset are presented.
- Type
- Part 4: Realization and comparison of reference frames
- Information
- Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 465 - 467
- Copyright
- Copyright © Kluwer 1990
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