Product: EOP C01 IAU2000 (1900-now)
EOP C01 series of the Earth orientation parameters (1900-2024) IAU 2000 - Version metadata

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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.iau2000.1846-1899 and eopc01.iau2000.1900-'NOW' (this file).
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 (1900-2024) IAU 2000
Data

Year [yyyy.yy], x ["], sigma_x ["], y ["], sigma_y ["], ut1-tai [s], sigma_ut1-tai [s], dX ["], sigma_dX ["], dY ["], sigma_dY ["]
Data Points

2497
Time Start

1900.00
Time End

2024.80
Time Interval

0.05 years
Accuracy 
-             Min        Max    Average    Average (last 365 days)
   sx:    0.000047   0.064572   0.014639   0.000066
   sy:    0.000038   0.048594   0.013256   0.000059
 sut1:   0.000003   99.990000   44.867401   0.000023
  sdX:   0.000000   0.002747   0.000236   0.000108
  sdY:   0.000000   0.001920   0.000236   0.000087
Keywords

EOP, Long term series, C01, 1900-2024
Frequency

irregular
Source

http://hpiers.obspm.fr/eoppc/eop/eopc01/eopc01.iau2000.1900-now.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.
---
IERS Annual reports

Date

2024-11-01
Contact

services.iers@obspm.fr
Distribution

onLine