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Realisation of a celestial system based on VLBI geodynamics programs

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Abstract

The relative orientations of various VLBI celestial reference frames are evaluated on the basis of coordinate differences of common sources. It is shown that an accuracy better than 0.001″ can be achieved. Possible regional deformations in the different catalogues are investigated; they are found to reach a few 0.001″ in some restricted zones. The application of these studies to the realisation of a combined celestial reference frame consistent with the BIH Terrestrial System is outlined.

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References

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Arias, E.F., Boucher, C., Feissel, M. et al. Realisation of a celestial system based on VLBI geodynamics programs. Astrophys Space Sci 177, 187–192 (1991). https://doi.org/10.1007/BF00643673

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  • DOI: https://doi.org/10.1007/BF00643673

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