Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2026.09.29-22:33:52.0610000   1.581643554D-06  rad 
e2        2026.09.29-22:33:52.0610000   8.535322753D-07  rad 
e3        2026.09.29-22:33:52.0610000   2.699661617D-03  rad 
e1r       2026.09.29-22:33:52.0610000   2.015801904D-14  rad 
e2r       2026.09.29-22:33:52.0610000  -1.018912183D-13  rad 
e3r       2026.09.29-22:33:52.0610000   7.871993206D-13  rad 
e1rr      2026.09.29-22:33:52.0610000   2.707175157D-20  rad 
e2rr      2026.09.29-22:33:52.0610000  -2.923431777D-19  rad 
e3rr      2026.09.29-22:33:52.0610000  -2.616962451D-18  rad 
utcmtai   2026.09.29-22:33:52.0610000  -37.0000000       s
ut1mtai   2026.09.29-22:33:52.0610000  -37.0216537       s
ut1rat    2026.09.29-22:33:52.0610000  -9.327063538D-04  s/day
lod       2026.09.29-22:33:52.0610000   9.276201495D-04  s
xpol      2026.09.29-22:33:52.0610000   0.176054         arcsec
ypol      2026.09.29-22:33:52.0610000   0.326237         arcsec
xpolr     2026.09.29-22:33:52.0610000  -1.815831856D-03  arcsec/d
ypolr     2026.09.29-22:33:52.0610000   3.592416866D-04  arcsec/d
deps      2026.09.29-22:33:52.0610000    8.2261473       arcsec
dpsi      2026.09.29-22:33:52.0610000    8.1116172       arcsec
mat       2026.09.29-22:33:52.0610000   9.730450916971D-01  -2.306009961566D-01  -2.535763362746D-03   2.306001221646D-01   9.730483952105D-01  -6.357955519134D-04   2.614035558377D-03   3.391039988235D-05   9.999965828283D-01
matr      2026.09.29-22:33:52.0610000   1.681562656624D-05   7.095580873660D-05  -4.625181937801D-08  -7.095556766600D-05   1.681569001047D-05   1.849761350302D-07  -1.231993111370D-10  -3.796602742469D-11   3.233359283464D-13
matrr     2026.09.29-22:33:52.0610000  -5.174161659010D-09   1.226219416834D-09   1.348885145570D-11  -1.226214789702D-09  -5.174179238603D-09   3.373008366369D-12   2.542176888587D-15  -9.207954978900D-15  -6.349715833596D-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