Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2026.02.04-01:21:10.9710000   1.767237280D-06  rad 
e2        2026.02.04-01:21:10.9710000   4.453870418D-07  rad 
e3        2026.02.04-01:21:10.9710000   2.693032505D-03  rad 
e1r       2026.02.04-01:21:10.9710000   5.528873509D-14  rad 
e2r       2026.02.04-01:21:10.9710000  -7.661540788D-15  rad 
e3r       2026.02.04-01:21:10.9710000   5.705674150D-13  rad 
e1rr      2026.02.04-01:21:10.9710000   1.854162227D-21  rad 
e2rr      2026.02.04-01:21:10.9710000  -5.843490675D-20  rad 
e3rr      2026.02.04-01:21:10.9710000   3.991911878D-19  rad 
utcmtai   2026.02.04-01:21:10.9710000  -37.0000000       s
ut1mtai   2026.02.04-01:21:10.9710000  -36.9307458       s
ut1rat    2026.02.04-01:21:10.9710000  -6.760319011D-04  s/day
lod       2026.02.04-01:21:10.9710000   6.723453857D-04  s
xpol      2026.02.04-01:21:10.9710000   0.091868         arcsec
ypol      2026.02.04-01:21:10.9710000   0.364519         arcsec
xpolr     2026.02.04-01:21:10.9710000  -1.365384580D-04  arcsec/d
ypolr     2026.02.04-01:21:10.9710000   9.853159879D-04  arcsec/d
deps      2026.02.04-01:21:10.9710000    8.7149354       arcsec
dpsi      2026.02.04-01:21:10.9710000    7.1317652       arcsec
mat       2026.02.04-01:21:10.9710000  -8.990626663244D-01   4.378140421239D-01   2.277397806854D-03  -4.378125445598D-01  -8.990655501338D-01   1.145595307994D-03   2.549087624524D-03   3.288864334030D-05   9.999967505300D-01
matr      2026.02.04-01:21:10.9710000  -3.192579422870D-05  -6.556089449829D-05   8.366644556561D-08   6.556068430186D-05  -3.192590375873D-05  -1.660351410904D-07   1.308327315915D-10  -2.441736232434D-11  -3.327021259147D-13
matrr     2026.02.04-01:21:10.9710000   4.780760533605D-09  -2.328073659243D-09  -1.210728632468D-11   2.328065672174D-09   4.780775860875D-09  -6.101061671099D-12   1.955775635655D-15   9.451169345301D-15  -5.314006217943D-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: 2025.11.10_08:51:28