Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.03.17-19:46:09.5620000   1.938768885D-06  rad 
e2        2026.03.17-19:46:09.5620000   5.090922254D-07  rad 
e3        2026.03.17-19:46:09.5620000   2.693705471D-03  rad 
e1r       2026.03.17-19:46:09.5620000   8.817800009D-14  rad 
e2r       2026.03.17-19:46:09.5620000   7.374668603D-15  rad 
e3r       2026.03.17-19:46:09.5620000   9.179522487D-13  rad 
e1rr      2026.03.17-19:46:09.5620000   1.995449387D-19  rad 
e2rr      2026.03.17-19:46:09.5620000  -1.958220476D-19  rad 
e3rr      2026.03.17-19:46:09.5620000   1.772898845D-18  rad 
utcmtai   2026.03.17-19:46:09.5620000  -37.0000000       s
ut1mtai   2026.03.17-19:46:09.5620000  -36.9399744       s
ut1rat    2026.03.17-19:46:09.5620000  -1.087627838D-03  s/day
lod       2026.03.17-19:46:09.5620000   1.081696820D-03  s
xpol      2026.03.17-19:46:09.5620000   0.105008         arcsec
ypol      2026.03.17-19:46:09.5620000   0.399900         arcsec
xpolr     2026.03.17-19:46:09.5620000   1.314260286D-04  arcsec/d
ypolr     2026.03.17-19:46:09.5620000   1.571444764D-03  arcsec/d
deps      2026.03.17-19:46:09.5620000    9.1557751       arcsec
dpsi      2026.03.17-19:46:09.5620000    6.4336673       arcsec
mat       2026.03.17-19:46:09.5620000  -3.656231792787D-01   9.307625245830D-01   9.020010936690D-04  -9.307594475163D-01  -3.656242901722D-01   2.393594604760D-03   2.557661666762D-03   3.560762969417D-05   9.999967285441D-01
matr      2026.03.17-19:46:09.5620000  -6.787204943678D-05  -2.666174390235D-05   1.746839316487D-07   2.666166299732D-05  -6.787227417740D-05  -6.573679551153D-08   8.680194490980D-11  -1.165953533453D-10  -2.178590338878D-13
matrr     2026.03.17-19:46:09.5620000   1.944199141954D-09  -4.949324322999D-09  -4.793622163480D-12   4.949307934918D-09   1.944205041679D-09  -1.273804490331D-11   8.606510839622D-15   6.387336853284D-15  -2.226119689199D-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