bulletina-xxxix-013.txt eng dataset United States Naval Observatory (USNO) +1-202-762-1467 +202-762-1489 3450 Massachusetts Ave, NW Washington, DC 20392-5420 USA usn.ncr.navobsydc.mbx.eopcp@mail.mil http://www.usno.navy.mil/USNO/about-us originator 2026-03-26 ISO19115 2003 https://maia.usno.navy.mil/ser7/ [ser7.dat] IERS Bulletin A Volume XXXIX Number 013 Bulletin A XXXIX 013 2026-03-26 creation United States Naval Observatory (USNO) +1-202-762-1467 +202-762-1489 3450 Massachusetts Ave, NW Washington, DC 20392-5420 USA usn.ncr.navobsydc.mbx.eopcp@mail.mil http://www.usno.navy.mil/USNO/about-us originator IERS Bulletin A contains Earth orientation parameters x/y pole, UT1-UTC and their errors at daily intervals and predictions for 1 year into the future. The contents of IERS Bulletin A are divided into four sections: 1. General information including key definitions and the most recently adopted values of DUT1 and TAI-UTC. 2. Quick-look daily estimates of the EOPs determined by smoothing the observed data. This involves the application of systematic corrections and statistical weighting. The results are published with a delay of about one to three days between the date of publication and the last available date with estimated EOP. 3. Predictions of x, y, and UT1-UTC, up to 365 days following the last day of data. The predictions use similar algorithms based on seasonal filtering and autoregressive processing for x, y, and UT1. 4. The combination series for the celestial pole offsets. Bulletin A contains celestial pole offsets with respect to the IAU1980 Nutation theroy (dpsi and deps) and the IAU 2000 Resolutions (dX and dY), beginning on 1 January 2003. completed United States Naval Observatory (USNO) +1-202-762-1467 +202-762-1489 3450 Massachusetts Ave, NW Washington, DC 20392-5420 USA usn.ncr.navobsydc.mbx.eopcp@mail.mil http://www.usno.navy.mil/USNO/about-us originator weekly EOP, Rapid, Bulletin A, Earth orientation parameter, Volume XXXIX, Number 013 eng geoscientificInformation product category: EOP; product subcategory: RAPID_EOP; product name: BULLETIN_A -180 +180 -90 +90 2026-03-04 2027-03-26 documentation: Explanatory supplement to IERS Bulletins A and B: http://hpiers.obspm.fr/eoppc/bul/bulb/explanatory.html [.rtf] Description of contents: https://maia.usno.navy.mil/ser7/readme.bulla Homepage of the IERS Rapid Service and Prediction Centre https://maia.usno.navy.mil/; data points: section 1: 2 section 2: 7 section 3: 365 section 4: 2x28; time interval of data: 1 day; accuracy: Section 2: Min Max Average x ["]: 0.00009 0.00009 0.00009 y ["]: 0.00009 0.00009 0.00009 UT1-UTC [s]: 0.000014 0.000022 0.000019 Section 3: Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d x,y ["] 0.004 0.007 0.010 0.013 UT1-UTC [s] 0.0014 0.0024 0.0032 0.0040 Section 4: [msec. of arc] Min Max Average dX: 0.128 0.547 0.442 dY: 0.038 0.170 0.087 ; data descprition: section 1: DUT1 [sec], TAI-UTC [sec] section 2: x [''], y [''], UT1-UTC [sec] and their errors section 3: Predictions for x [''], y [''], UT1-UTC [sec] section 4: dpsi, deps, dX, dY ([msec of arc]) and their errors ; published by: IERS Rapid Service Prediction Centre; email subscription: https://maia.usno.navy.mil OR https://www.iers.org/subscription.html; Available on http://www.iers.org/products : Dataset-files in .xml, .html and .csv format ASCII unknown United States Naval Observatory (USNO) +1-202-762-1467 +202-762-1489 3450 Massachusetts Ave, NW Washington, DC 20392-5420 USA usn.ncr.navobsydc.mbx.eopcp@mail.mil http://www.usno.navy.mil/USNO/about-us originator free of charge https://maia.usno.navy.mil/ser7/ [ser7.dat] dataset