Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.12.19-21:12:51.9120000   1.545836547D-06  rad 
e2        2025.12.19-21:12:51.9120000   5.468656691D-07  rad 
e3        2025.12.19-21:12:51.9120000   2.692526205D-03  rad 
e1r       2025.12.19-21:12:51.9120000   2.679132302D-14  rad 
e2r       2025.12.19-21:12:51.9120000  -1.823149053D-13  rad 
e3r       2025.12.19-21:12:51.9120000  -5.098418690D-13  rad 
e1rr      2025.12.19-21:12:51.9120000   7.888338226D-20  rad 
e2rr      2025.12.19-21:12:51.9120000  -7.128177057D-19  rad 
e3rr      2025.12.19-21:12:51.9120000  -4.514635005D-19  rad 
utcmtai   2025.12.19-21:12:51.9120000  -37.0000000       s
ut1mtai   2025.12.19-21:12:51.9120000  -36.9238026       s
ut1rat    2025.12.19-21:12:51.9120000   6.040817594D-04  s/day
lod       2025.12.19-21:12:51.9120000  -6.007876002D-04  s
xpol      2025.12.19-21:12:51.9120000   0.112799         arcsec
ypol      2025.12.19-21:12:51.9120000   0.318852         arcsec
xpolr     2025.12.19-21:12:51.9120000  -3.249084840D-03  arcsec/d
ypolr     2025.12.19-21:12:51.9120000   4.774556493D-04  arcsec/d
deps      2025.12.19-21:12:51.9120000    8.0307925       arcsec
dpsi      2025.12.19-21:12:51.9120000    4.7706031       arcsec
mat       2025.12.19-21:12:51.9120000   6.890103750202D-01   7.247493223704D-01  -1.767155376647D-03  -7.247470578258D-01   6.890126404393D-01   1.812039640051D-03   2.530866893365D-03   3.222654800243D-05   9.999967968320D-01
matr      2025.12.19-21:12:51.9120000  -5.284938998404D-05   5.024359538500D-05   1.322443061905D-07  -5.024343007050D-05  -5.284955538985D-05   1.289080681209D-07  -4.195303688492D-11  -1.095309910570D-10   1.097077095532D-13
matrr     2025.12.19-21:12:51.9120000  -3.663808776087D-09  -3.853850469917D-09   9.400447097144D-12   3.853838409009D-09  -3.663820831819D-09  -9.643139162017D-12   7.969748401132D-15  -3.477607805706D-15  -2.007209512823D-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