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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        2025.12.13-15:56:16.0000000   1.536603214D-06  rad 
e2        2025.12.13-15:56:16.0000000   5.804317329D-07  rad 
e3        2025.12.13-15:56:16.0000000   2.692590550D-03  rad 
e1r       2025.12.13-15:56:16.0000000   4.466433184D-14  rad 
e2r       2025.12.13-15:56:16.0000000  -7.263890095D-14  rad 
e3r       2025.12.13-15:56:16.0000000   2.780641838D-13  rad 
e1rr      2025.12.13-15:56:16.0000000   3.755592936D-19  rad 
e2rr      2025.12.13-15:56:16.0000000  -4.611315043D-19  rad 
e3rr      2025.12.13-15:56:16.0000000  -1.206491322D-18  rad 
utcmtai   2025.12.13-15:56:16.0000000  -37.0000000       s
ut1mtai   2025.12.13-15:56:16.0000000  -36.9246850       s
ut1rat    2025.12.13-15:56:16.0000000  -3.294619599D-04  s/day
lod       2025.12.13-15:56:16.0000000   3.276653485D-04  s
xpol      2025.12.13-15:56:16.0000000   0.119723         arcsec
ypol      2025.12.13-15:56:16.0000000   0.316947         arcsec
xpolr     2025.12.13-15:56:16.0000000  -1.294518139D-03  arcsec/d
ypolr     2025.12.13-15:56:16.0000000   7.959755307D-04  arcsec/d
deps      2025.12.13-15:56:16.0000000    8.2589893       arcsec
dpsi      2025.12.13-15:56:16.0000000    4.2982345       arcsec
mat       2025.12.13-15:56:16.0000000   7.789853413906D-01  -6.270391028670D-01  -1.949711339313D-03   6.270370279780D-01   7.789877805832D-01  -1.613457938060D-03   2.530502526984D-03   3.431887908054D-05   9.999967976845D-01
matr      2025.12.13-15:56:16.0000000   4.572426227578D-05   5.680468582634D-05  -1.175458437291D-07  -5.680450784616D-05   4.572441330377D-05   1.422177550386D-07  -1.118817715568D-10   3.542403890770D-11   2.819022949684D-13
matrr     2025.12.13-15:56:16.0000000  -4.142250122795D-09   3.334276848357D-09   1.037065534842D-11  -3.334265834782D-09  -4.142263101227D-09   8.571752536952D-12  -2.660837383752D-15  -8.311423563476D-15   7.004757019629D-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: 2025.10.01_14:25:31