Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.09.09-16:21:45.1740000   1.618014670D-06  rad 
e2        2026.09.09-16:21:45.1740000   9.746946784D-07  rad 
e3        2026.09.09-16:21:45.1740000   2.698165759D-03  rad 
e1r       2026.09.09-16:21:45.1740000  -3.443680766D-14  rad 
e2r       2026.09.09-16:21:45.1740000  -1.636127776D-14  rad 
e3r       2026.09.09-16:21:45.1740000   8.719369094D-13  rad 
e1rr      2026.09.09-16:21:45.1740000  -1.369592685D-19  rad 
e2rr      2026.09.09-16:21:45.1740000   1.125247045D-19  rad 
e3rr      2026.09.09-16:21:45.1740000   2.130896096D-18  rad 
utcmtai   2026.09.09-16:21:45.1740000  -37.0000000       s
ut1mtai   2026.09.09-16:21:45.1740000  -37.0011403       s
ut1rat    2026.09.09-16:21:45.1740000  -1.033106958D-03  s/day
lod       2026.09.09-16:21:45.1740000   1.027473252D-03  s
xpol      2026.09.09-16:21:45.1740000   0.201045         arcsec
ypol      2026.09.09-16:21:45.1740000   0.333739         arcsec
xpolr     2026.09.09-16:21:45.1740000  -2.915789001D-04  arcsec/d
ypolr     2026.09.09-16:21:45.1740000  -6.137079661D-04  arcsec/d
deps      2026.09.09-16:21:45.1740000    8.4120989       arcsec
dpsi      2026.09.09-16:21:45.1740000    9.2678566       arcsec
mat       2026.09.09-16:21:45.1740000  -5.924049866668D-01  -8.056387855904D-01   1.574460136536D-03   8.056360854572D-01  -5.924070780191D-01  -2.086078157555D-03   2.613346802442D-03   3.263879799425D-05   9.999965846708D-01
matr      2026.09.09-16:21:45.1740000   5.874791081660D-05  -4.319900588335D-05  -1.519978569640D-07   4.319885357149D-05   5.874810739860D-05  -1.147395077642D-07   1.394079057325D-11   1.403913993193D-10  -4.101446731931D-14
matrr     2026.09.09-16:21:45.1740000   3.150110105225D-09   4.283979609095D-09  -8.366882907474D-12  -4.283965274659D-09   3.150121211841D-09   1.108364040475D-11  -1.001912719033D-14   9.307298707641D-16   2.613329197076D-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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This page was prepared by Leonid Petrov ()
Last update: 2025.11.10_08:51:28