Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2025.08.29-00:19:23.6500000   1.906348795D-06  rad 
e2        2025.08.29-00:19:23.6500000   1.122449372D-06  rad 
e3        2025.08.29-00:19:23.6500000   2.692099259D-03  rad 
e1r       2025.08.29-00:19:23.6500000  -7.981460236D-14  rad 
e2r       2025.08.29-00:19:23.6500000   2.643349896D-14  rad 
e3r       2025.08.29-00:19:23.6500000  -5.449709562D-13  rad 
e1rr      2025.08.29-00:19:23.6500000  -1.045499554D-19  rad 
e2rr      2025.08.29-00:19:23.6500000   1.492756273D-19  rad 
e3rr      2025.08.29-00:19:23.6500000  -1.573170233D-18  rad 
utcmtai   2025.08.29-00:19:23.6500000  -37.0000000       s
ut1mtai   2025.08.29-00:19:23.6500000  -36.9179477       s
ut1rat    2025.08.29-00:19:23.6500000   6.457041567D-04  s/day
lod       2025.08.29-00:19:23.6500000  -6.421830236D-04  s
xpol      2025.08.29-00:19:23.6500000   0.231522         arcsec
ypol      2025.08.29-00:19:23.6500000   0.393213         arcsec
xpolr     2025.08.29-00:19:23.6500000   4.710787667D-04  arcsec/d
ypolr     2025.08.29-00:19:23.6500000  -1.422398318D-03  arcsec/d
deps      2025.08.29-00:19:23.6500000    9.3009429       arcsec
dpsi      2025.08.29-00:19:23.6500000    3.7216707       arcsec
mat       2025.08.29-00:19:23.6500000   9.501529099846D-01  -3.117753425534D-01  -2.362926911243D-03   3.117742731104D-01   9.501558473032D-01  -8.175952780138D-04   2.500054869340D-03   4.014071242867D-05   9.999968740523D-01
matr      2025.08.29-00:19:23.6500000   2.273493947066D-05   6.928645887991D-05  -5.948352722017D-08  -6.928624447381D-05   2.273501711785D-05   1.723905341550D-07  -1.555944678691D-10  -3.649033903632D-11   3.904606759017D-13
matrr     2025.08.29-00:19:23.6500000  -5.052432770816D-09   1.657863597963D-09   1.257097221781D-11  -1.657857935347D-09  -5.052448405668D-09   4.337810947910D-12   2.554817827498D-15  -1.152237564484D-14  -5.950225232330D-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: 2017.07.05_12:12:16