Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.09.18-07:34:44.6080000   1.764750622D-06  rad 
e2        2025.09.18-07:34:44.6080000   1.132317763D-06  rad 
e3        2025.09.18-07:34:44.6080000   2.691487486D-03  rad 
e1r       2025.09.18-07:34:44.6080000  -9.427169642D-14  rad 
e2r       2025.09.18-07:34:44.6080000  -3.274086255D-14  rad 
e3r       2025.09.18-07:34:44.6080000  -1.264776028D-13  rad 
e1rr      2025.09.18-07:34:44.6080000   2.492124163D-20  rad 
e2rr      2025.09.18-07:34:44.6080000   3.669008568D-20  rad 
e3rr      2025.09.18-07:34:44.6080000   2.119248698D-18  rad 
utcmtai   2025.09.18-07:34:44.6080000  -37.0000000       s
ut1mtai   2025.09.18-07:34:44.6080000  -36.9095582       s
ut1rat    2025.09.18-07:34:44.6080000   1.498559014D-04  s/day
lod       2025.09.18-07:34:44.6080000  -1.490387120D-04  s
xpol      2025.09.18-07:34:44.6080000   0.233557         arcsec
ypol      2025.09.18-07:34:44.6080000   0.364006         arcsec
xpolr     2025.09.18-07:34:44.6080000  -5.834840547D-04  arcsec/d
ypolr     2025.09.18-07:34:44.6080000  -1.680042228D-03  arcsec/d
deps      2025.09.18-07:34:44.6080000    9.4814992       arcsec
dpsi      2025.09.18-07:34:44.6080000    3.8147860       arcsec
mat       2025.09.18-07:34:44.6080000  -3.531689549626D-01   9.355591732073D-01   8.501048444232D-04  -9.355562061346D-01  -3.531699761650D-01   2.356501340507D-03   2.504877953429D-03   3.692225272965D-05   9.999968621067D-01
matr      2025.09.18-07:34:44.6080000  -6.822183555913D-05  -2.575356134445D-05   1.719652693488D-07   2.575348709768D-05  -6.822205223512D-05  -6.190446989959D-08   1.252706705678D-10  -8.790083138120D-11  -3.105432188461D-13
matrr     2025.09.18-07:34:44.6080000   1.877973942811D-09  -4.974830606306D-09  -4.513940040318D-12   4.974814806363D-09   1.877979356439D-09  -1.253978059117D-11   6.609597208781D-15   8.986964118287D-15  -1.691152267343D-17

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Rms errors of the Earth orientation parameter at the current moment:
1.1 nrad for components 1,2 (polar motion) and
2.5 nrad for component 3 (axial component, or UT1),
which corresponds to 7 and 16 mm at the Earth's surface respectively.
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This page was prepared by Leonid Petrov ()
Last update: 2017.07.05_12:12:16