Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.12.19-21:44:56.9170000   1.545952224D-06  rad 
e2        2025.12.19-21:44:56.9170000   5.474573009D-07  rad 
e3        2025.12.19-21:44:56.9170000   2.692525218D-03  rad 
e1r       2025.12.19-21:44:56.9170000   2.782885672D-14  rad 
e2r       2025.12.19-21:44:56.9170000  -1.704830759D-13  rad 
e3r       2025.12.19-21:44:56.9170000  -5.108738073D-13  rad 
e1rr      2025.12.19-21:44:56.9170000   8.215969084D-20  rad 
e2rr      2025.12.19-21:44:56.9170000  -6.379318390D-19  rad 
e3rr      2025.12.19-21:44:56.9170000  -4.294714493D-19  rad 
utcmtai   2025.12.19-21:44:56.9170000  -37.0000000       s
ut1mtai   2025.12.19-21:44:56.9170000  -36.9237891       s
ut1rat    2025.12.19-21:44:56.9170000   6.053044427D-04  s/day
lod       2025.12.19-21:44:56.9170000  -6.020036160D-04  s
xpol      2025.12.19-21:44:56.9170000   0.112921         arcsec
ypol      2025.12.19-21:44:56.9170000   0.318876         arcsec
xpolr     2025.12.19-21:44:56.9170000  -3.038226505D-03  arcsec/d
ypolr     2025.12.19-21:44:56.9170000   4.959458270D-04  arcsec/d
deps      2025.12.19-21:44:56.9170000    8.0308565       arcsec
dpsi      2025.12.19-21:44:56.9170000    4.7740151       arcsec
mat       2025.12.19-21:44:56.9170000   5.808315711370D-01   8.140223878156D-01  -1.496029912701D-03  -8.140198283942D-01   5.808334968908D-01   2.041536343938D-03   2.530800575152D-03   3.200925062671D-05   9.999967970068D-01
matr      2025.12.19-21:44:56.9170000  -5.935926320898D-05   4.235504760801D-05   1.489801135126D-07  -4.235490706093D-05  -5.935945011916D-05   1.091378229827D-07  -2.615297210071D-11  -1.151585259307D-10   6.987431875626D-14
matrr     2025.12.19-21:44:56.9170000  -3.088568591485D-09  -4.328559484623D-09   7.958819912446D-12   4.328545855462D-09  -3.088578841256D-09  -1.086358556762D-11   8.372200833645D-15  -2.329057213621D-15  -2.112780625028D-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