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Network Earth Rotation Service: Earth rotation parameters now


The table is refreshed every 10 seconds
Parameter TAI time                      Value            Dimension
e1        2025.11.29-08:12:53.0000000   1.529037503D-06  rad 
e2        2025.11.29-08:12:53.0000000   6.438229147D-07  rad 
e3        2025.11.29-08:12:53.0000000   2.692122720D-03  rad 
e1r       2025.11.29-08:12:53.0000000   7.206009165D-15  rad 
e2r       2025.11.29-08:12:53.0000000  -7.933745787D-14  rad 
e3r       2025.11.29-08:12:53.0000000   9.362557499D-13  rad 
e1rr      2025.11.29-08:12:53.0000000  -3.752568963D-20  rad 
e2rr      2025.11.29-08:12:53.0000000  -2.337275768D-19  rad 
e3rr      2025.11.29-08:12:53.0000000   1.407738024D-18  rad 
utcmtai   2025.11.29-08:12:53.0000000  -37.0000000       s
ut1mtai   2025.11.29-08:12:53.0000000  -36.9182695       s
ut1rat    2025.11.29-08:12:53.0000000  -1.109314584D-03  s/day
lod       2025.11.29-08:12:53.0000000   1.103265305D-03  s
xpol      2025.11.29-08:12:53.0000000   0.132798         arcsec
ypol      2025.11.29-08:12:53.0000000   0.315387         arcsec
xpolr     2025.11.29-08:12:53.0000000  -1.413894992D-03  arcsec/d
ypolr     2025.11.29-08:12:53.0000000   1.284203017D-04  arcsec/d
deps      2025.11.29-08:12:53.0000000    8.4727932       arcsec
dpsi      2025.11.29-08:12:53.0000000    3.4623238       arcsec
mat       2025.11.29-08:12:53.0000000  -9.809301458330D-01  -1.943447461715D-01   2.483673011505D-03   1.943442067048D-01  -9.809332895701D-01  -4.590571904408D-04   2.525532890546D-03   3.238442437016D-05   9.999968103123D-01
matr      2025.11.29-08:12:53.0000000   1.417180340285D-05  -7.153078389072D-05  -3.336188752205D-08   7.153055476693D-05   1.417184245727D-05  -1.810657789816D-07   1.018948317278D-10   6.760607977881D-11  -2.595289605850D-13
matrr     2025.11.29-08:12:53.0000000   5.216090342204D-09   1.033427037868D-09  -1.320355287062D-11  -1.033424190203D-09   5.216107050233D-09   2.432692399989D-12  -4.928421385993D-15   7.331848871588D-15   1.219455045235D-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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Last update: 2025.10.01_14:25:31