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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        2026.08.26-17:31:12.0000000   1.662286115D-06  rad 
e2        2026.08.26-17:31:12.0000000   1.034115226D-06  rad 
e3        2026.08.26-17:31:12.0000000   2.697599501D-03  rad 
e1r       2026.08.26-17:31:12.0000000  -6.255401709D-14  rad 
e2r       2026.08.26-17:31:12.0000000   3.148225188D-15  rad 
e3r       2026.08.26-17:31:12.0000000   3.634163255D-13  rad 
e1rr      2026.08.26-17:31:12.0000000  -5.928230637D-20  rad 
e2rr      2026.08.26-17:31:12.0000000   3.656184529D-19  rad 
e3rr      2026.08.26-17:31:12.0000000   2.148269270D-18  rad 
utcmtai   2026.08.26-17:31:12.0000000  -37.0000000       s
ut1mtai   2026.08.26-17:31:12.0000000  -36.9933750       s
ut1rat    2026.08.26-17:31:12.0000000  -4.305907119D-04  s/day
lod       2026.08.26-17:31:12.0000000   4.282426285D-04  s
xpol      2026.08.26-17:31:12.0000000   0.213302         arcsec
ypol      2026.08.26-17:31:12.0000000   0.342871         arcsec
xpolr     2026.08.26-17:31:12.0000000   5.610540025D-05  arcsec/d
ypolr     2026.08.26-17:31:12.0000000  -1.114792607D-03  arcsec/d
deps      2026.08.26-17:31:12.0000000    8.2670601       arcsec
dpsi      2026.08.26-17:31:12.0000000    9.5027431       arcsec
mat       2026.08.26-17:31:12.0000000  -5.404915874553D-01  -8.413481899883D-01   1.437739026616D-03   8.413453697476D-01  -5.404934987346D-01  -2.178676182541D-03   2.610113859514D-03   3.207892449665D-05   9.999965931325D-01
matr      2026.08.26-17:31:12.0000000   6.135187324306D-05  -3.941340813778D-05  -1.587461210123D-07   3.941326896571D-05   6.135207857323D-05  -1.047662670272D-07   4.438632444674D-12   1.462600910545D-10  -1.627725805746D-14
matrr     2026.08.26-17:31:12.0000000   2.874060921340D-09   4.473864213266D-09  -7.639701404322D-12  -4.473849241075D-09   2.874071069994D-09   1.157566664530D-11  -1.042991277262D-14   1.497392290535D-16   2.719717438603D-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