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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        2025.11.28-10:31:27.0000000   1.525610242D-06  rad 
e2        2025.11.28-10:31:27.0000000   6.505747329D-07  rad 
e3        2025.11.28-10:31:27.0000000   2.692055363D-03  rad 
e1r       2025.11.28-10:31:27.0000000  -3.207854759D-14  rad 
e2r       2025.11.28-10:31:27.0000000  -2.209362648D-14  rad 
e3r       2025.11.28-10:31:27.0000000   8.121871521D-13  rad 
e1rr      2025.11.28-10:31:27.0000000  -2.322641722D-19  rad 
e2rr      2025.11.28-10:31:27.0000000   3.719713917D-20  rad 
e3rr      2025.11.28-10:31:27.0000000   2.301367340D-18  rad 
utcmtai   2025.11.28-10:31:27.0000000  -37.0000000       s
ut1mtai   2025.11.28-10:31:27.0000000  -36.9173458       s
ut1rat    2025.11.28-10:31:27.0000000  -9.623129714D-04  s/day
lod       2025.11.28-10:31:27.0000000   9.570653172D-04  s
xpol      2025.11.28-10:31:27.0000000   0.134191         arcsec
ypol      2025.11.28-10:31:27.0000000   0.314680         arcsec
xpolr     2025.11.28-10:31:27.0000000  -3.937366873D-04  arcsec/d
ypolr     2025.11.28-10:31:27.0000000  -5.716807549D-04  arcsec/d
deps      2025.11.28-10:31:27.0000000    8.4741415       arcsec
dpsi      2025.11.28-10:31:27.0000000    3.5224580       arcsec
mat       2025.11.28-10:31:27.0000000  -7.076306429771D-01  -7.065802105128D-01   1.810864836425D-03   7.065780158279D-01  -7.076329592496D-01  -1.761400706285D-03   2.525998524845D-03   3.309616872456D-05   9.999968091130D-01
matr      2025.11.28-10:31:27.0000000   5.152448227378D-05  -5.160140967167D-05  -1.283299020536D-07   5.160124088800D-05   5.152464202766D-05  -1.320037007270D-07   4.733128151722D-11   1.131809227483D-10  -1.233049956642D-13
matrr     2025.11.28-10:31:27.0000000   3.762821878234D-09   3.757236172689D-09  -9.625953187344D-12  -3.757224523679D-09   3.762834186359D-09   9.357790182811D-12  -8.184555645487D-15   3.263759392381D-15   2.055119477785D-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