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Non-tidal vertical variations and the past star catalogs

Published online by Cambridge University Press:  01 October 2007

Z. X. Li
Z. X. Li*
Affiliation:
Shanghai Astronomical Observatory, Shanghai 200030, China email: [email protected]
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Abstract

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Tidal vertical variations have been removed in astrometric observations, but the non-tidal ones remain unknown. From the repeated observations of gravimetric networks in China, the non-tidal vertical variations at Beijing-Tangshan and West Yunnan are determined, which are of the order of 0.″2. Astrometric results, including past star catalogs, based on these observations should be corrected.

Keywords

astrometrycatalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 108 - 109
Copyright
Copyright © International Astronomical Union 2008

References

IAU 1991, Trans Int Astronomical Union, XXIB, 209Google Scholar
Li, Z. X., Li, H., & Han, Y. B. 2005, Journal of Geodesy, 78, 593CrossRefGoogle Scholar