EOP C04 series for 1981 (IAU1980) 

Available downloads

Content

Earth orientation parameters: x/y pole, UT1-UTC, LOD, dPsi, dEpsi
(smoothed values at 1-day intervals) with respect to IAU 1976/1980
precession/nutation model.

EOP C 04 is no longer being updated and is presented here for historical
reasons only. See EOP 05 C04 for the new version of this series.

The data are stored in yearly files since 1962 and in one file 1962-now.

Format

ASCII

Format Description

2X,A4,I3,2X,I5,2F9.6,F10.7,2X,F10.7,2X,2F9.5

Documentation

http://hpiers.obspm.fr/eoppc/eop/eopc04/EOPC04.GUIDE
http://hpiers.obspm.fr/eoppc/eop/eopc04/eopc04-xy.gif (C04 polar motion plot)
http://hpiers.obspm.fr/eoppc/eop/eopc04/eopc04-lod.gif (C04 LOD plot)

Title

EOP C04 series for 1981 (IAU1980)

Data

Month [mmm], Day [dd], MJD, x ["], y ["], UT1-UTC [s], LOD [s], dPsi ["], dEpsi ["]

Data Points

365

Time Start

1981-01-01

Time End

1981-12-31

Time Interval

1 day

Accuracy 

Cf. http://hpiers.obspm.fr/eoppc/eop/eopc04/EOPC04.GUIDE

Keywords

EOP, Long term series, C04, IAU1980

Frequency

bi-weekly

Source

http://hpiers.obspm.fr/eoppc/eop/eopc04/eopc04.81

Created by

IERS Earth Orientation Centre

Published by

IERS Earth Orientation Centre

Date

1999-01-03

Contact

services.iers@obspm.fr

Distribution

onLine