Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.07.25-14:34:37.3950000   1.786581819D-06  rad 
e2        2026.07.25-14:34:37.3950000   1.064280918D-06  rad 
e3        2026.07.25-14:34:37.3950000   2.697288835D-03  rad 
e1r       2026.07.25-14:34:37.3950000  -4.397077027D-14  rad 
e2r       2026.07.25-14:34:37.3950000   2.882728483D-14  rad 
e3r       2026.07.25-14:34:37.3950000  -4.512336928D-13  rad 
e1rr      2026.07.25-14:34:37.3950000  -1.114514432D-19  rad 
e2rr      2026.07.25-14:34:37.3950000  -5.092025690D-20  rad 
e3rr      2026.07.25-14:34:37.3950000   1.449987190D-19  rad 
utcmtai   2026.07.25-14:34:37.3950000  -37.0000000       s
ut1mtai   2026.07.25-14:34:37.3950000  -36.9891147       s
ut1rat    2026.07.25-14:34:37.3950000   5.346403653D-04  s/day
lod       2026.07.25-14:34:37.3950000  -5.317248817D-04  s
xpol      2026.07.25-14:34:37.3950000   0.219524         arcsec
ypol      2026.07.25-14:34:37.3950000   0.368509         arcsec
xpolr     2026.07.25-14:34:37.3950000   5.137390933D-04  arcsec/d
ypolr     2026.07.25-14:34:37.3950000  -7.836153762D-04  arcsec/d
deps      2026.07.25-14:34:37.3950000    7.6727886       arcsec
dpsi      2026.07.25-14:34:37.3950000    9.0875206       arcsec
mat       2026.07.25-14:34:37.3950000  -9.481993387487D-01   3.176664654314D-01   2.455755840663D-03  -3.176653251000D-01  -9.482025184475D-01   8.516095574565D-04   2.599081670854D-03   2.738714176161D-05   9.999966220065D-01
matr      2026.07.25-14:34:37.3950000  -2.316452106220D-05  -6.914401984380D-05   6.223578280358D-08   6.914378818608D-05  -2.316460456632D-05  -1.789973342862D-07   1.535803080228D-10   3.208502894931D-11  -4.000478323929D-13
matrr     2026.07.25-14:34:37.3950000   5.042044684073D-09  -1.689189633075D-09  -1.305257255560D-11   1.689183542832D-09   5.042061576481D-09  -4.538707552638D-12  -2.343997291373D-15   1.077957829755D-14   5.772457039322D-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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This page was prepared by Leonid Petrov ()
Last update: 2025.11.10_08:51:28