Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-25T05:04:14.179Z Has data issue: false hasContentIssue false
  • English
  • Français

Solution of Earth orientation parameters in 20th century based on optical astrometry and new catalog EOC-3

Published online by Cambridge University Press:  01 October 2007

J. Vondrák ,
C. Ron  and
V. Štefka
J. Vondrák
Affiliation:
Astronomical Institute, Boční II, CZ-14131, Prague, Czech Republic email: [email protected]
C. Ron
Affiliation:
Astronomical Institute, Boční II, CZ-14131, Prague, Czech Republic email: [email protected]
V. Štefka
Affiliation:
Astronomical Institute, Boční II, CZ-14131, Prague, Czech Republic email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A new star catalog has been derived recently, which is based on combination of Hipparcos/Tycho Catalogues with long lasting ground-based astrometric observations. In addition to ‘classical’ mean positions and proper motions of the stars, it contains also information on periodic motions of many stars that are due to double or multiple stellar systems. The catalog, called EOC-3, contains 4418 different objects, out of which 585 have significant periodic motions. This improved catalog is used as a reference frame in optical wavelength to derive a new series of Earth Orientation Parameters. To this end, almost five million observations of latitude/universal time variations made at 33 observatories are used. The new EOP series covers almost the entire 20th century (namely the interval 1899.7-1992.0).

Keywords

astrometrycatalogsreference systems
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. 89 - 92
Copyright
Copyright © International Astronomical Union 2008

References

Capitaine, N., Wallace, P. T., & Chapront, J. 2003, A&A, 412, 567Google Scholar
Høg, E., Fabricius, C., Makarov, V. V. et al. 2000, A&A, 355, L27Google Scholar
Mathews, P. M., Herring, T. A., & Buffet, B. A. 2002, J. Geophys. Res., 107 (B4), doi: 10.1029/2001JB000390.CrossRefGoogle Scholar
Ron, C., Capitaine, N., & Vondrák, J. 2005, in: Capitaine, N. (ed.) Journées 2004 Systèmes de référence spatio-temporels, (Observatoire de Paris), p. 110Google Scholar
Vondrák, J. 2004, Serb. Astron. J. 168, 1CrossRefGoogle Scholar
Vondrák, J. & Štefka, V. 2007, A&A, 463, 783Google Scholar
Vondrák, J., Pešek, I., Ron, C., & Čepek, A. 1998, Publ. Astron. Inst. Acad. Sci. Czech R. 87Google Scholar
Vondrák, J., Ron, C., & Pešek, I. 2000, in: Dick, S., McCarthy, D. D., & Luzum, B. (eds.), Polar motion: Historical and Scientific Problems, Proc. IAU Coll. 178, ASP Conf. Series 208, p. 206CrossRefGoogle Scholar
Wielen, R., Schwan, H., Dettbarn, C. et al. 2001, Veröff. Astron. Rechen-Inst. Heidelberg, 40, Kommissions-Verlag G. Braun, Karlsruhe.Google Scholar
Yoder, C. F., Williams, J. G., & Parke, M. E. 1981, J. Geophys. Res. 86, 881CrossRefGoogle Scholar