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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        2026.03.25-05:06:48.0000000   1.957525945D-06  rad 
e2        2026.03.25-05:06:48.0000000   5.385821465D-07  rad 
e3        2026.03.25-05:06:48.0000000   2.694078971D-03  rad 
e1r       2026.03.25-05:06:48.0000000   3.210617896D-15  rad 
e2r       2026.03.25-05:06:48.0000000   7.931852184D-14  rad 
e3r       2026.03.25-05:06:48.0000000   1.305675301D-14  rad 
e1rr      2026.03.25-05:06:48.0000000  -8.815320005D-20  rad 
e2rr      2026.03.25-05:06:48.0000000   3.781011784D-20  rad 
e3rr      2026.03.25-05:06:48.0000000  -1.065976898D-19  rad 
utcmtai   2026.03.25-05:06:48.0000000  -37.0000000       s
ut1mtai   2026.03.25-05:06:48.0000000  -36.9450964       s
ut1rat    2026.03.25-05:06:48.0000000  -1.547018166D-05  s/day
lod       2026.03.25-05:06:48.0000000   1.538582017D-05  s
xpol      2026.03.25-05:06:48.0000000   0.111091         arcsec
ypol      2026.03.25-05:06:48.0000000   0.403769         arcsec
xpolr     2026.03.25-05:06:48.0000000   1.413557528D-03  arcsec/d
ypolr     2026.03.25-05:06:48.0000000   5.721731813D-05  arcsec/d
deps      2026.03.25-05:06:48.0000000    8.8843640       arcsec
dpsi      2026.03.25-05:06:48.0000000    6.2689221       arcsec
mat       2026.03.25-05:06:48.0000000  -1.927068514523D-01  -9.812562304025D-01   5.288662826711D-04   9.812530264812D-01  -1.927075738596D-01  -2.507787586927D-03   2.562698732428D-03   3.568379048711D-05   9.999967156455D-01
matr      2026.03.25-05:06:48.0000000   7.155410068629D-05  -1.405245812743D-05  -1.827272019030D-07   1.405240553951D-05   7.155433395322D-05  -3.853208394565D-08  -5.162863899384D-12   1.473125102182D-10   7.974222338055D-15
matrr     2026.03.25-05:06:48.0000000   1.024717601501D-09   5.217824403253D-09  -2.810208711973D-12  -5.217807393165D-09   1.024721437316D-09   1.332467343401D-11  -1.080527309849D-14  -7.745794174099D-16   2.769671781008D-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