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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        2025.04.25-17:52:06.0000000   1.994810769D-06  rad 
e2        2025.04.25-17:52:06.0000000   3.922829308D-07  rad 
e3        2025.04.25-17:52:06.0000000   2.695755553D-03  rad 
e1r       2025.04.25-17:52:06.0000000   1.187040633D-13  rad 
e2r       2025.04.25-17:52:06.0000000   4.190167137D-14  rad 
e3r       2025.04.25-17:52:06.0000000   8.431819175D-13  rad 
e1rr      2025.04.25-17:52:06.0000000   2.797408024D-19  rad 
e2rr      2025.04.25-17:52:06.0000000  -3.644147288D-19  rad 
e3rr      2025.04.25-17:52:06.0000000   9.722024067D-20  rad 
utcmtai   2025.04.25-17:52:06.0000000  -37.0000000       s
ut1mtai   2025.04.25-17:52:06.0000000  -36.9680881       s
ut1rat    2025.04.25-17:52:06.0000000  -9.990368529D-04  s/day
lod       2025.04.25-17:52:06.0000000   9.935889373D-04  s
xpol      2025.04.25-17:52:06.0000000   0.080914         arcsec
ypol      2025.04.25-17:52:06.0000000   0.411459         arcsec
xpolr     2025.04.25-17:52:06.0000000   7.467413869D-04  arcsec/d
ypolr     2025.04.25-17:52:06.0000000   2.115458261D-03  arcsec/d
deps      2025.04.25-17:52:06.0000000    9.3588865       arcsec
dpsi      2025.04.25-17:52:06.0000000   -0.0433106       arcsec
mat       2025.04.25-17:52:06.0000000  -5.231423850483D-01   8.522443729077D-01   1.254517122884D-03  -8.522417500817D-01  -5.231438879200D-01   2.114698484063D-03   2.458532848567D-03   3.713654029658D-05   9.999969771140D-01
matr      2025.04.25-17:52:06.0000000  -6.214644864597D-05  -3.814825423317D-05   1.543538417860D-07   3.814814471634D-05  -6.214664026729D-05  -9.145283527015D-08   1.010736104007D-10  -1.111411237732D-10  -2.443661318896D-13
matrr     2025.04.25-17:52:06.0000000   2.781806604591D-09  -4.531804515342D-09  -6.668913635189D-12   4.531790541844D-09   2.781814590828D-09  -1.125575542679D-11   7.998065569874D-15   7.377977745221D-15  -1.996013919908D-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: 2022.11.17_15:11:17