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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        2026.01.05-12:27:52.0000000   1.629608124D-06  rad 
e2        2026.01.05-12:27:52.0000000   5.079355606D-07  rad 
e3        2026.01.05-12:27:52.0000000   2.692666297D-03  rad 
e1r       2026.01.05-12:27:52.0000000   5.896683887D-14  rad 
e2r       2026.01.05-12:27:52.0000000  -1.001148878D-13  rad 
e3r       2026.01.05-12:27:52.0000000   2.844193183D-13  rad 
e1rr      2026.01.05-12:27:52.0000000  -7.787735355D-20  rad 
e2rr      2026.01.05-12:27:52.0000000  -6.058051201D-19  rad 
e3rr      2026.01.05-12:27:52.0000000   2.107403417D-18  rad 
utcmtai   2026.01.05-12:27:52.0000000  -37.0000000       s
ut1mtai   2026.01.05-12:27:52.0000000  -36.9257238       s
ut1rat    2026.01.05-12:27:52.0000000  -3.369917864D-04  s/day
lod       2026.01.05-12:27:52.0000000   3.351541136D-04  s
xpol      2026.01.05-12:27:52.0000000   0.104769         arcsec
ypol      2026.01.05-12:27:52.0000000   0.336131         arcsec
xpolr     2026.01.05-12:27:52.0000000  -1.784175373D-03  arcsec/d
ypolr     2026.01.05-12:27:52.0000000   1.050864503D-03  arcsec/d
deps      2026.01.05-12:27:52.0000000    8.2025914       arcsec
dpsi      2026.01.05-12:27:52.0000000    6.1700628       arcsec
mat       2026.01.05-12:27:52.0000000   3.680330360714D-01  -9.298122750007D-01  -9.042224018312D-04   9.298092428511D-01   3.680341453616D-01  -2.374817190859D-03   2.540918893818D-03   3.325683405083D-05   9.999967713074D-01
matr      2026.01.05-12:27:52.0000000   6.780276023069D-05   2.683747338233D-05  -1.730538550073D-07  -2.683739240877D-05   6.780298103326D-05   6.596796172169D-08  -7.321172282179D-11   1.006688735847D-10   1.826777121613D-13
matrr     2026.01.05-12:27:52.0000000  -1.957013528799D-09   4.944271401560D-09   4.810035230976D-12  -4.944255300703D-09  -1.957019432398D-09   1.261916205665D-11  -7.058692529926D-15  -5.687690480792D-15   1.810933478388D-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