eopc01.1900-now.dat English dataset IERS Earth Orientation Centre services.iers@obspm.fr resourceProvider 2026-03-01 http://hpiers.obspm.fr/eoppc/eop/eopc01/eopc01.1900-now.dat EOP C01 series of the Earth orientation parameters (1900-2026) 2026-03-01 creation IERS Earth Orientation Centre services.iers@obspm.fr resourceProvider EOP(IERS) C 01 is a series of the Earth Orientation Parameters given in the 1997 IERS system at 0.1 year interval (1846 - 1889) and 0.05 year interval (1890 - now). It is regularly recomputed to take advantage on one hand of the improvement of the various individual contributions and in the other hand of the refinement of the analyses procedures. This series is the basis of the IERS system. The data are stored in two files: eopc01.1846-1899 and eopc01.1900-'NOW' (this file). completed IERS Earth Orientation Centre services.iers@obspm.fr resourceProvider irregular EOP, Long term series, C01, 1900-2026 English farming product category: EOP; product subcategory: LONG_TERM; product name: EOP_C01 1900.00 2026.15 documentation: http://hpiers.obspm.fr/eoppc/eop/eopc01/EOPC01.GUIDE; data points: 2524; time interval of data: 0.05 years; accuracy: - Min Max Average Average (last 365 days) sx: 0.000013 0.064545 0.014482 0.000054 sy: 0.000006 0.048579 0.013114 0.000048 sut1: 0.000001 99.990000 44.387192 0.000040 sdPsi: 0.000008 0.006903 0.001825 0.000300 sdEps: 0.000001 0.001920 0.000726 0.000087 ; data descprition: Year [yyyy.yy], x ["], sigma_x ["], y ["], sigma_y ["], ut1-tai [s], sigma_ut1-tai [s], dPsi ["], sigma_dPsi ["], dEps ["], sigma_dEps ["]; published by: IERS Earth Orientation Centre; reference: Vondrak J., Ron C., Pesek I., Cepek A., 1995, Astron. and Astrophys. 297, 899-906. --- IERS Annual reports ; Available on http://www.iers.org/products : Dataset-files in .xml, .html and .csv format ASCII unknown IERS Earth Orientation Centre services.iers@obspm.fr resourceProvider http://hpiers.obspm.fr/eoppc/eop/eopc01/eopc01.1900-now.dat dataset