Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.12.19-22:45:53.8750000   1.546495508D-06  rad 
e2        2025.12.19-22:45:53.8750000   5.450320244D-07  rad 
e3        2025.12.19-22:45:53.8750000   2.692523446D-03  rad 
e1r       2025.12.19-22:45:53.8750000   3.462258095D-14  rad 
e2r       2025.12.19-22:45:53.8750000  -2.009220802D-13  rad 
e3r       2025.12.19-22:45:53.8750000  -5.110099632D-13  rad 
e1rr      2025.12.19-22:45:53.8750000   1.224219834D-19  rad 
e2rr      2025.12.19-22:45:53.8750000  -8.309499887D-19  rad 
e3rr      2025.12.19-22:45:53.8750000  -3.998539500D-19  rad 
utcmtai   2025.12.19-22:45:53.8750000  -37.0000000       s
ut1mtai   2025.12.19-22:45:53.8750000  -36.9237648       s
ut1rat    2025.12.19-22:45:53.8750000   6.054657658D-04  s/day
lod       2025.12.19-22:45:53.8750000  -6.021640594D-04  s
xpol      2025.12.19-22:45:53.8750000   0.112421         arcsec
ypol      2025.12.19-22:45:53.8750000   0.318988         arcsec
xpolr     2025.12.19-22:45:53.8750000  -3.580688501D-03  arcsec/d
ypolr     2025.12.19-22:45:53.8750000   6.170186838D-04  arcsec/d
deps      2025.12.19-22:45:53.8750000    8.0310059       arcsec
dpsi      2025.12.19-22:45:53.8750000    4.7804939       arcsec
mat       2025.12.19-22:45:53.8750000   3.457907504146D-01   9.383112161527D-01  -9.047484301568D-04  -9.383082394238D-01   3.457919325906D-01   2.363722606759D-03   2.530762141967D-03   3.157949265898D-05   9.999967971177D-01
matr      2025.12.19-22:45:53.8750000  -6.842251724774D-05   2.521554599815D-05   1.724757074783D-07  -2.521545967245D-05  -6.842273459201D-05   6.602136315951D-08   5.071752842726D-12  -1.194557535075D-10  -9.063077329023D-15
matrr     2025.12.19-22:45:53.8750000  -1.838740352949D-09  -4.989464615945D-09   4.814786116867D-12   4.989448767207D-09  -1.838746649015D-09  -1.257702619304D-11   8.666654880715D-15  -7.079303468534D-17  -2.194534694654D-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