Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2025.11.26-22:04:39.0690000   1.526372502D-06  rad 
e2        2025.11.26-22:04:39.0690000   6.499848649D-07  rad 
e3        2025.11.26-22:04:39.0690000   2.691969710D-03  rad 
e1r       2025.11.26-22:04:39.0690000   1.348846054D-14  rad 
e2r       2025.11.26-22:04:39.0690000  -1.527420183D-13  rad 
e3r       2025.11.26-22:04:39.0690000   4.214060990D-13  rad 
e1rr      2025.11.26-22:04:39.0690000  -2.139871474D-19  rad 
e2rr      2025.11.26-22:04:39.0690000  -5.835057733D-19  rad 
e3rr      2025.11.26-22:04:39.0690000   2.554257188D-18  rad 
utcmtai   2025.11.26-22:04:39.0690000  -37.0000000       s
ut1mtai   2025.11.26-22:04:39.0690000  -36.9161712       s
ut1rat    2025.11.26-22:04:39.0690000  -4.992993970D-04  s/day
lod       2025.11.26-22:04:39.0690000   4.965766336D-04  s
xpol      2025.11.26-22:04:39.0690000   0.134069         arcsec
ypol      2025.11.26-22:04:39.0690000   0.314837         arcsec
xpolr     2025.11.26-22:04:39.0690000  -2.722058163D-03  arcsec/d
ypolr     2025.11.26-22:04:39.0690000   2.403816221D-04  arcsec/d
deps      2025.11.26-22:04:39.0690000    8.4404141       arcsec
dpsi      2025.11.26-22:04:39.0690000    3.5686801       arcsec
mat       2025.11.26-22:04:39.0690000   8.011375790172D-01   5.984767427052D-01  -2.041550226051D-03  -5.984749081804D-01   8.011401795326D-01   1.482233802713D-03   2.522650372798D-03   3.434338383807D-05   9.999968175228D-01
matr      2025.11.26-22:04:39.0690000  -4.364147889480D-05   5.842006402960D-05   1.081935419678D-07  -5.841987427156D-05  -4.364161293961D-05   1.489204689363D-07  -5.710756594016D-11  -1.029213013939D-10   1.475975584056D-13
matrr     2025.11.26-22:04:39.0690000  -4.260044473742D-09  -3.182396649519D-09   1.085948816048D-11   3.182386875504D-09  -4.260058311197D-09  -7.889320831551D-12   7.652294217194D-15  -4.407807730332D-15  -1.916659615932D-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