EOP C01 series of the Earth orientation parameters (1846-1899)

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Content

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 (this file) and eopc01.1900-'NOW'.
Format

ASCII
Format Description

f10.2,4f10.6,2f11.7,4f10.6
Documentation

http://hpiers.obspm.fr/eoppc/eop/eopc01/EOPC01.GUIDE
Title

EOP C01 series of the Earth orientation parameters (1846-1899)
Data

Year [yyyy.yy], x ["], sigma_x ["], y ["], sigma_y ["], ut1-tai [s], sigma_ut1-tai [s], dPsi ["], sigma_dPsi ["], dEps ["], sigma_dEps ["]
Data Points

640
Time Start

1846.00
Time End

1899.95
Time Interval

1846-1889: 0.10 years
1890-1899: 0.05 years
Accuracy 
-             Min        Max    Average    Average (last 365 days)
   sx:    0.035100   0.157870   0.066124   0.039336
   sy:    0.000000   0.164320   0.077636   0.044129
Keywords

EOP, Long term series, C01, 1846-1899
Frequency

Irregular
Source

http://hpiers.obspm.fr/eoppc/eop/eopc01/eopc01.1846-1899.dat
Created by

IERS Earth Orientation Centre
Published by

IERS Earth Orientation Centre
Reference

Vondrak J., Ron C., Pesek I., Cepek A., 1995, Astron. and Astrophys. 297, 899-906.
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IERS Annual reports
Date

2023-11-01
Contact

services.iers@obspm.fr
Distribution

onLine