Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2026.09.15-08:59:55.5250000   1.595252443D-06  rad 
e2        2026.09.15-08:59:55.5250000   9.279405241D-07  rad 
e3        2026.09.15-08:59:55.5250000   2.698626330D-03  rad 
e1r       2026.09.15-08:59:55.5250000  -6.633919546D-14  rad 
e2r       2026.09.15-08:59:55.5250000  -5.549900319D-14  rad 
e3r       2026.09.15-08:59:55.5250000   6.489688670D-13  rad 
e1rr      2026.09.15-08:59:55.5250000  -4.197249564D-20  rad 
e2rr      2026.09.15-08:59:55.5250000   1.550492829D-19  rad 
e3rr      2026.09.15-08:59:55.5250000  -2.017926546D-18  rad 
utcmtai   2026.09.15-08:59:55.5250000  -37.0000000       s
ut1mtai   2026.09.15-08:59:55.5250000  -37.0074564       s
ut1rat    2026.09.15-08:59:55.5250000  -7.689251881D-04  s/day
lod       2026.09.15-08:59:55.5250000   7.647321100D-04  s
xpol      2026.09.15-08:59:55.5250000   0.191401         arcsec
ypol      2026.09.15-08:59:55.5250000   0.329044         arcsec
xpolr     2026.09.15-08:59:55.5250000  -9.890632345D-04  arcsec/d
ypolr     2026.09.15-08:59:55.5250000  -1.182249328D-03  arcsec/d
deps      2026.09.15-08:59:55.5250000    8.3156845       arcsec
dpsi      2026.09.15-08:59:55.5250000    8.6508201       arcsec
mat       2026.09.15-08:59:55.5250000  -6.269601912341D-01   7.790496241220D-01   1.612998163663D-03  -7.790469183308D-01  -6.269622653742D-01   2.053493613293D-03   2.611062410307D-03   3.085749981357D-05   9.999965906946D-01
matr      2026.09.15-08:59:55.5250000  -5.680899752667D-05  -4.571880991798D-05   1.498630169398D-07   4.571865884980D-05  -5.680919514705D-05  -1.175539690767D-07   1.279244505899D-10  -5.095408291607D-11  -3.324475420966D-13
matrr     2026.09.15-08:59:55.5250000   3.333857241187D-09  -4.142591869512D-09  -8.572178868688D-12   4.142577458083D-09   3.333868257247D-09  -1.092846167389D-11   3.504413191782D-15   9.160342029057D-15  -9.451895013343D-18

Back

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.
Back to the Network Earth Rotation Service
This page was prepared by Leonid Petrov ()
Last update: 2025.11.10_08:51:28