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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        2025.05.16-08:03:54.0000000   2.088584587D-06  rad 
e2        2025.05.16-08:03:54.0000000   4.899782035D-07  rad 
e3        2025.05.16-08:03:54.0000000   2.695916162D-03  rad 
e1r       2025.05.16-08:03:54.0000000   9.956478149D-14  rad 
e2r       2025.05.16-08:03:54.0000000   3.415937012D-14  rad 
e3r       2025.05.16-08:03:54.0000000  -3.716296541D-13  rad 
e1rr      2025.05.16-08:03:54.0000000   2.360285481D-19  rad 
e2rr      2025.05.16-08:03:54.0000000  -6.460187196D-20  rad 
e3rr      2025.05.16-08:03:54.0000000   3.429470668D-19  rad 
utcmtai   2025.05.16-08:03:54.0000000  -37.0000000       s
ut1mtai   2025.05.16-08:03:54.0000000  -36.9702906       s
ut1rat    2025.05.16-08:03:54.0000000   4.403222038D-04  s/day
lod       2025.05.16-08:03:54.0000000  -4.379210529D-04  s
xpol      2025.05.16-08:03:54.0000000   0.101065         arcsec
ypol      2025.05.16-08:03:54.0000000   0.430801         arcsec
xpolr     2025.05.16-08:03:54.0000000   6.087636743D-04  arcsec/d
ypolr     2025.05.16-08:03:54.0000000   1.774371775D-03  arcsec/d
deps      2025.05.16-08:03:54.0000000    8.7449671       arcsec
dpsi      2025.05.16-08:03:54.0000000    0.5065298       arcsec
mat       2025.05.16-08:03:54.0000000   9.958633707706D-01  -9.083023957026D-02  -2.452414519025D-03   9.082987128966D-02   9.958663897186D-01  -2.613623953507D-04   2.466016802139D-03   3.752874091472D-05   9.999969586717D-01
matr      2025.05.16-08:03:54.0000000   6.623419205852D-06   7.261972430479D-05  -1.891187770559D-08  -7.261950406622D-05   6.623445700206D-06   1.788685291647D-07  -1.495986750015D-10  -2.214095117992D-11   3.697448920679D-13
matrr     2025.05.16-08:03:54.0000000  -5.295497890112D-09   4.829892734394D-10   1.304329533058D-11  -4.829873403356D-10  -5.295513950114D-09   1.379527542661D-12   1.587855733785D-15  -1.135916211148D-14  -3.512233223737D-18

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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