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International Earth Rotation and Reference Systems Service

EOP Web service

RESTful EOP Web service

The RESTful EOP Web service requires the GET parameters mjd, param and series and returns the value and unit for the given input.

Valid input parameters:
for param: "x_pole", "sigma_x_pole", "y_pole", "sigma_y_pole", "x_rate", "sigma_x_rate", "y_rate", "sigma_y_rate", "UT1-UTC", "sigma_UT1-UTC", "LOD", "sigma_LOD", "dPsi", "sigma_dPsi", "dEpsilon", "sigma_dEpsilon", "dX", "sigma_dX", "dY", "sigma_dY
for series: "Finals All IAU2000", "Finals Daily IAU2000", "Finals Data IAU2000", "Finals All IAU1980","Finals Daily IAU1980","Finals Data IAU1980", "EOP 14 C04 IAU1980","EOP 14 C04 IAU2000","EOP 20 C04 IAU2000 dX dY 0hUTC", "EOP 20 C04 IAU2000 dPsi dEps 0hUTC", "EOP 20u23 C04 IAU2000 dX dY 0hUTC", "EOP 20u23 C04 IAU2000 dPsi dEps 0hUTC", "GPS Rapid", "GPS Rapid Daily", "Bulletin A", "Bulletin B"
for mjd: a modified julian day

URL: https://datacenter.iers.org/webservice/REST/eop/RestController.php

Example: https://datacenter.iers.org/webservice/REST/eop/RestController.php?param=y_pole&mjd=60190&series=Bulletin%20A

Depending on the ACCEPT header the web service returns "MJD", "Param", "Series", "Value" and "Unit" in html, json or xml format.

SOAP EOP Web service

The SOAP EOP Web service returns a single EOP value for a specified parameter, series and date (MJD):

WSDL file: https://data.iers.org/eris/webservice/eop/eop.wsdl

Valid input parameters:
for param: "x_pole", "sigma_x_pole", "y_pole", "sigma_y_pole", "x_rate", "sigma_x_rate", "y_rate", "sigma_y_rate", "UT1-UTC", "sigma_UT1-UTC", "LOD", "sigma_LOD", "dPsi", "sigma_dPsi", "dEpsilon", "sigma_dEpsilon", "dX", "sigma_dX", "dY", "sigma_dY
for series: "Finals All IAU2000", "Finals Daily IAU2000", "Finals Data IAU2000", "Finals All IAU1980","Finals Daily IAU1980","Finals Data IAU1980", "EOP 14 C04 IAU1980","EOP 14 C04 IAU2000","EOP 20 C04 IAU2000 dX dY 0hUTC", "EOP 20 C04 IAU2000 dPsi dEps 0hUTC", "EOP 20u23 C04 IAU2000 dX dY 0hUTC", "EOP 20u23 C04 IAU2000 dPsi dEps 0hUTC", "GPS Rapid", "GPS Rapid Daily", "Bulletin A", "Bulletin B"
for mjd: a modified julian day

Unit of return value: msec for "UT1-UTC", "sigma_UT1_UTC","LOD" and "sigma_LOD"; marcsec for all other parameters