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Network Earth Rotation Service: Earth rotation parameters now


The table is refreshed every 10 seconds
Parameter TAI time                      Value            Dimension
e1        2026.03.06-22:18:25.0000000   1.903902802D-06  rad 
e2        2026.03.06-22:18:25.0000000   5.105954688D-07  rad 
e3        2026.03.06-22:18:25.0000000   2.693447737D-03  rad 
e1r       2026.03.06-22:18:25.0000000   1.719991826D-14  rad 
e2r       2026.03.06-22:18:25.0000000   4.579039725D-14  rad 
e3r       2026.03.06-22:18:25.0000000   4.318240527D-13  rad 
e1rr      2026.03.06-22:18:25.0000000   2.034050671D-20  rad 
e2rr      2026.03.06-22:18:25.0000000   3.940132297D-19  rad 
e3rr      2026.03.06-22:18:25.0000000  -2.008842258D-18  rad 
utcmtai   2026.03.06-22:18:25.0000000  -37.0000000       s
ut1mtai   2026.03.06-22:18:25.0000000  -36.9364400       s
ut1rat    2026.03.06-22:18:25.0000000  -5.116430199D-04  s/day
lod       2026.03.06-22:18:25.0000000   5.088529446D-04  s
xpol      2026.03.06-22:18:25.0000000   0.105318         arcsec
ypol      2026.03.06-22:18:25.0000000   0.392708         arcsec
xpolr     2026.03.06-22:18:25.0000000   8.160434568D-04  arcsec/d
ypolr     2026.03.06-22:18:25.0000000   3.065245466D-04  arcsec/d
deps      2026.03.06-22:18:25.0000000    9.0548885       arcsec
dpsi      2026.03.06-22:18:25.0000000    6.5309863       arcsec
mat       2026.03.06-22:18:25.0000000  -7.521000180920D-01   6.590462469966D-01   1.899238173479D-03  -6.590440284642D-01  -7.521024153102D-01   1.710388909655D-03   2.555647009335D-03   3.470195303303D-05   9.999967337267D-01
matr      2026.03.06-22:18:25.0000000  -4.805824871968D-05  -5.484417374883D-05   1.248644111581D-07   5.484399903864D-05  -4.805841085641D-05  -1.384583106490D-07   1.298971355868D-10  -6.553029754615D-11  -3.296982736967D-13
matrr     2026.03.06-22:18:25.0000000   3.999287554877D-09  -3.504474606322D-09  -1.009665184378D-11   3.504462782741D-09   3.999300295207D-09  -9.105403861359D-12   4.607363382099D-15   9.435479036777D-15  -1.212343524219D-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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Last update: 2025.10.01_14:25:31