Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.04.02-20:54:21.8340000   1.993110012D-06  rad 
e2        2026.04.02-20:54:21.8340000   6.169636550D-07  rad 
e3        2026.04.02-20:54:21.8340000   2.694486089D-03  rad 
e1r       2026.04.02-20:54:21.8340000   6.899614919D-14  rad 
e2r       2026.04.02-20:54:21.8340000   3.517232050D-14  rad 
e3r       2026.04.02-20:54:21.8340000   6.512714530D-13  rad 
e1rr      2026.04.02-20:54:21.8340000   1.694178883D-19  rad 
e2rr      2026.04.02-20:54:21.8340000  -4.327470441D-19  rad 
e3rr      2026.04.02-20:54:21.8340000  -1.632384779D-18  rad 
utcmtai   2026.04.02-20:54:21.8340000  -37.0000000       s
ut1mtai   2026.04.02-20:54:21.8340000  -36.9506794       s
ut1rat    2026.04.02-20:54:21.8340000  -7.716533874D-04  s/day
lod       2026.04.02-20:54:21.8340000   7.674454319D-04  s
xpol      2026.04.02-20:54:21.8340000   0.127258         arcsec
ypol      2026.04.02-20:54:21.8340000   0.411108         arcsec
xpolr     2026.04.02-20:54:21.8340000   6.268157458D-04  arcsec/d
ypolr     2026.04.02-20:54:21.8340000   1.229599643D-03  arcsec/d
deps      2026.04.02-20:54:21.8340000    8.9832422       arcsec
dpsi      2026.04.02-20:54:21.8340000    5.7702860       arcsec
mat       2026.04.02-20:54:21.8340000  -8.122191551403D-01   5.833487788314D-01   2.060645309975D-03  -5.833467942644D-01  -8.122217684045D-01   1.522022141966D-03   2.561570735592D-03   3.414470256291D-05   9.999967185894D-01
matr      2026.04.02-20:54:21.8340000  -4.253831928192D-05  -5.922814619865D-05   1.111346892624D-07   5.922795575182D-05  -4.253846437413D-05  -1.502215394346D-07   1.445994245720D-10  -5.080348770801D-11  -3.686681948501D-13
matrr     2026.04.02-20:54:21.8340000   4.318970707535D-09  -3.101953776829D-09  -1.095458990519D-11   3.101943195982D-09   4.318984595779D-09  -8.104282949685D-12   3.377504252973D-15   1.052394416387D-14  -9.034571856126D-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