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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        2026.02.03-21:21:15.0000000   1.766674474D-06  rad 
e2        2026.02.03-21:21:15.0000000   4.456004315D-07  rad 
e3        2026.02.03-21:21:15.0000000   2.693024947D-03  rad 
e1r       2026.02.03-21:21:15.0000000   5.902180958D-14  rad 
e2r       2026.02.03-21:21:15.0000000  -4.618853319D-15  rad 
e3r       2026.02.03-21:21:15.0000000   5.731725160D-13  rad 
e1rr      2026.02.03-21:21:15.0000000   2.804725374D-20  rad 
e2rr      2026.02.03-21:21:15.0000000  -4.333900077D-20  rad 
e3rr      2026.02.03-21:21:15.0000000   6.288926766D-19  rad 
utcmtai   2026.02.03-21:21:15.0000000  -37.0000000       s
ut1mtai   2026.02.03-21:21:15.0000000  -36.9306421       s
ut1rat    2026.02.03-21:21:15.0000000  -6.791185326D-04  s/day
lod       2026.02.03-21:21:15.0000000   6.754151853D-04  s
xpol      2026.02.03-21:21:15.0000000   0.091912         arcsec
ypol      2026.02.03-21:21:15.0000000   0.364403         arcsec
xpolr     2026.02.03-21:21:15.0000000  -8.231387486D-05  arcsec/d
ypolr     2026.02.03-21:21:15.0000000   1.051844151D-03  arcsec/d
deps      2026.02.03-21:21:15.0000000    8.7088283       arcsec
dpsi      2026.02.03-21:21:15.0000000    7.1481515       arcsec
mat       2026.02.03-21:21:15.0000000  -6.780748982137D-02   9.976984138848D-01   1.387653466039D-04  -9.976951706299D-01  -6.780762325221D-02   2.544156175680D-03   2.547709929495D-03   3.406732782890D-05   9.999967540015D-01
matr      2026.02.03-21:21:15.0000000  -7.275307988674D-05  -4.944609931105D-06   1.856490066113D-07   4.944600292034D-06  -7.275331670902D-05  -1.008495322324D-08   4.245537967378D-11  -1.236160244336D-10  -1.039530616140D-13
matrr     2026.02.03-21:21:15.0000000   3.605659795927D-10  -5.305255592512D-09  -7.353255844463D-13   5.305238323590D-09   3.605666822751D-10  -1.353756586182D-11   9.203155394023D-15   3.026884504217D-15  -2.356725683823D-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