EOP C01 series of the Earth orientation parameters (1846-2023)

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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.
Format

ASCII
Format Description

2X,F10.3,1X,F9.6,1X,F9.6,1X,F10.7,3X,F9.6,4X,F9.6,3X,F9.6,1X,F9,6,1X,F10.7,1X,F9.6,2X,F9.6
Documentation

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

EOP C01 series of the Earth orientation parameters (1846-2023)
Data

MJD, X["], Y["], UT1-UTC[s], dPsi["], dEps["], sigma_x["], sigma_y["], sigma_UT1-UTC[s], sigma_dPsi["], sigma_dEps["]
Data Points

3111
Time Start

1846-01-01
Time End

2023-07-02
Time Interval

0.1 years [1846-1889]
0.05 years [1890-now]
Accuracy 
-                min        max
sx            -0.014185    0.036813
sy            0.000022    0.157870
sut1          0.0000000   0.1643200
sdPsi         0.000000    0.002047
sdEps         0.000000    0.002582
Keywords

EOP, Long term series, C01, 1846-2023
Frequency

irregular
Source

http://hpiers.obspm.fr/eoppc/eop/eopc01/eopc01.1846-now
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.
---
IERS Annual reports

Date

2023-08-01
Contact

services.iers@obspm.fr
Distribution

onLine