Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2025.10.08-15:36:31.0510000   1.602321661D-06  rad 
e2        2025.10.08-15:36:31.0510000   1.051088445D-06  rad 
e3        2025.10.08-15:36:31.0510000   2.691404003D-03  rad 
e1r       2025.10.08-15:36:31.0510000  -8.426003259D-14  rad 
e2r       2025.10.08-15:36:31.0510000  -1.127602128D-14  rad 
e3r       2025.10.08-15:36:31.0510000   1.376112443D-13  rad 
e1rr      2025.10.08-15:36:31.0510000   5.325199569D-20  rad 
e2rr      2025.10.08-15:36:31.0510000   5.732168269D-19  rad 
e3rr      2025.10.08-15:36:31.0510000  -3.081203940D-18  rad 
utcmtai   2025.10.08-15:36:31.0510000  -37.0000000       s
ut1mtai   2025.10.08-15:36:31.0510000  -36.9084134       s
ut1rat    2025.10.08-15:36:31.0510000  -1.630475009D-04  s/day
lod       2025.10.08-15:36:31.0510000   1.621583755D-04  s
xpol      2025.10.08-15:36:31.0510000   0.216803         arcsec
ypol      2025.10.08-15:36:31.0510000   0.330503         arcsec
xpolr     2025.10.08-15:36:31.0510000  -2.009531241D-04  arcsec/d
ypolr     2025.10.08-15:36:31.0510000  -1.501621571D-03  arcsec/d
deps      2025.10.08-15:36:31.0510000    9.3417548       arcsec
dpsi      2025.10.08-15:36:31.0510000    2.6331392       arcsec
mat       2025.10.08-15:36:31.0510000  -3.228123619905D-01  -9.464626041814D-01   8.472498084872D-04   9.464596522785D-01  -3.228134715090D-01  -2.364153398141D-03   2.511086433802D-03   3.870981657225D-05   9.999968464683D-01
matr      2025.10.08-15:36:31.0510000   6.901692821275D-05  -2.353993013797D-05  -1.722832439417D-07   2.353984941916D-05   6.901714318663D-05  -6.170909418888D-08  -3.275759150513D-11   1.311406697123D-10   7.718095513341D-14
matrr     2025.10.08-15:36:31.0510000   1.716552984086D-09   5.032809553474D-09  -4.500131637779D-12  -5.032793876636D-09   1.716558870805D-09   1.256336789402D-11  -9.888334751000D-15  -2.520691096942D-15   2.490988884916D-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: 2017.07.05_12:12:16