Product: finals.data (IAU1980)
Standard Rapid EOP Data since 01. January 1992 (IAU1980) - Version metadata

Available downloads

Content

Quick-look weekly estimates of the EOP determined by combining the most recently available observed and modeled data (including VLBI 24-hour and intensive, GPS, and AAM). The combination process involves applying systematic corrections and slightly smoothing, in order to remove the high frequency noise.
finals.data contains the values from IERS Bulletin A for x/y pole, UT1-UTC, LOD, dPsi, dEps, their errors and predictions for next 365 days for x/y pole, UT1-UTC, dPsi and dEps as well as the values from IERS Bulletin B for x/y pole, UT1-UTC, dPsi, dEps at daily intervals since 01. January 1992.
Celestial pole offsets (dPsi, dEps) are related to the IAU1980 nutation theory.
Format

ASCII
Format Description

https://maia.usno.navy.mil/ser7/readme.finals
Documentation

http://hpiers.obspm.fr/eoppc/bul/bulb/explanatory.html
https://maia.usno.navy.mil
Title

Standard Rapid EOP Data since 01. January 1992 (IAU1980)
Data

Year, Month, Day, Modified Julian Date

PM-x [arcsec], error_PM-x [arcsec],
PM-y [arcsec], error_PM-y [arcsec],
UT1-UTC [seconds], error_UT1-UTC [seconds],
LOD [milliseconds], error_LOD [milliseconds],
dPsi [milliarcsec], error_dPsi [milliarcsec],
dEps [milliarcsec], error_dEps [milliarcsec]
(from Bulletin A)

PM-x [arcsec], PM-y [arcsec], UT1-UTC [seconds],
dPsi [milliarcsec], dEps [milliarcsec]
(from Bulletin B)
Data Points

12570
Time Start

1992-01-01
Time End

2026-05-31
Time Interval

1 day
Accuracy 
-          Count        Min        Max    Average    Average (last 365 days)
     PMx:   12147   0.000005   0.000761   0.000064   0.000020
     PMy:   12147   0.000005   0.000584   0.000067   0.000022
 UT1-UTC:   12147   0.000001   0.000055   0.000007   0.000011
     LOD:   12146   0.000900   0.032000   0.005081   0.007752
    dPsi:   12131   0.000000   1.586000   0.405604   0.959759
    dEps:   12131   0.000000   0.490000   0.191278   0.128296

For accuracy of predictions see latest annual report on 
http://www.iers.org/IERS/EN/Organization/ProductCentres/
RapidServicePredictionCentre/rapid.html
Keywords

EOP, Rapid data, Predictions, Pole coordinates, x pole, y pole, LOD, UT1-UTC, DUT1, dPsi, dEps, weekly, IAU1980
Frequency

weekly
Source

https://maia.usno.navy.mil/ser7/finals.data
Created by

IERS Rapid Service Prediction Centre
Published by

IERS Rapid Service Prediction Centre
Date

2025-04-03
Contact

usn.ncr.navobsydc.mbx.eopcp@mail.mil
Distribution

onLine