Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.04.07-23:44:28.5160000   2.017683613D-06  rad 
e2        2026.04.07-23:44:28.5160000   6.501784575D-07  rad 
e3        2026.04.07-23:44:28.5160000   2.694597484D-03  rad 
e1r       2026.04.07-23:44:28.5160000   6.906032185D-14  rad 
e2r       2026.04.07-23:44:28.5160000   4.307438576D-14  rad 
e3r       2026.04.07-23:44:28.5160000  -2.269798425D-14  rad 
e1rr      2026.04.07-23:44:28.5160000  -2.064088694D-19  rad 
e2rr      2026.04.07-23:44:28.5160000   2.483383235D-19  rad 
e3rr      2026.04.07-23:44:28.5160000  -4.300256271D-19  rad 
utcmtai   2026.04.07-23:44:28.5160000  -37.0000000       s
ut1mtai   2026.04.07-23:44:28.5160000  -36.9522070       s
ut1rat    2026.04.07-23:44:28.5160000   2.689351169D-05  s/day
lod       2026.04.07-23:44:28.5160000  -2.674685686D-05  s
xpol      2026.04.07-23:44:28.5160000   0.134109         arcsec
ypol      2026.04.07-23:44:28.5160000   0.416177         arcsec
xpolr     2026.04.07-23:44:28.5160000   7.676406576D-04  arcsec/d
ypolr     2026.04.07-23:44:28.5160000   1.230743281D-03  arcsec/d
deps      2026.04.07-23:44:28.5160000    8.7486689       arcsec
dpsi      2026.04.07-23:44:28.5160000    5.7952423       arcsec
mat       2026.04.07-23:44:28.5160000  -9.785564444824D-01  -2.059634748586D-01   2.516343797280D-03   2.059628806351D-01  -9.785596792897D-01  -4.958517070399D-04   2.564519919845D-03   3.305453372442D-05   9.999967110671D-01
matr      2026.04.07-23:44:28.5160000   1.501905072450D-05  -7.135769821148D-05  -3.600663737455D-08   7.135746244535D-05   1.501909366907D-05  -1.834499454672D-07   1.389779831810D-10   7.497282133478D-11  -3.588911792209D-13
matrr     2026.04.07-23:44:28.5160000   5.203468282997D-09   1.095209678459D-09  -1.337739439911D-11  -1.095206547557D-09   5.203485475341D-09   2.625379451603D-12  -5.414731768503D-15   9.871186445470D-15   1.353504182993D-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