Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds
Parameter TAI time                      Value            Dimension
e1        2025.07.21-09:17:13.2320000   2.098066900D-06  rad 
e2        2025.07.21-09:17:13.2320000   9.422844227D-07  rad 
e3        2025.07.21-09:17:13.2320000   2.693864533D-03  rad 
e1r       2025.07.21-09:17:13.2320000  -6.243450222D-14  rad 
e2r       2025.07.21-09:17:13.2320000   6.277520804D-14  rad 
e3r       2025.07.21-09:17:13.2320000  -7.158387093D-13  rad 
e1rr      2025.07.21-09:17:13.2320000  -9.449818394D-20  rad 
e2rr      2025.07.21-09:17:13.2320000   5.435175597D-20  rad 
e3rr      2025.07.21-09:17:13.2320000  -1.318408233D-18  rad 
utcmtai   2025.07.21-09:17:13.2320000  -37.0000000       s
ut1mtai   2025.07.21-09:17:13.2320000  -36.9421557       s
ut1rat    2025.07.21-09:17:13.2320000   8.481553464D-04  s/day
lod       2025.07.21-09:17:13.2320000  -8.435302130D-04  s
xpol      2025.07.21-09:17:13.2320000   0.194360         arcsec
ypol      2025.07.21-09:17:13.2320000   0.432757         arcsec
xpolr     2025.07.21-09:17:13.2320000   1.118734513D-03  arcsec/d
ypolr     2025.07.21-09:17:13.2320000  -1.112662700D-03  arcsec/d
deps      2025.07.21-09:17:13.2320000    8.5735097       arcsec
dpsi      2025.07.21-09:17:13.2320000    3.5711509       arcsec
mat       2025.07.21-09:17:13.2320000   2.041626151732D-01   9.789368385017D-01  -5.411006655443D-04  -9.789338276582D-01   2.041633293982D-01   2.428167129841D-03   2.487495166858D-03   3.396079436371D-05   9.999969056024D-01
matr      2025.07.21-09:17:13.2320000  -7.138498205623D-05   1.488782517905D-05   1.772170328946D-07  -1.488777290319D-05  -7.138520198665D-05   3.953349321903D-08   4.312083453080D-11  -1.645588806630D-10  -1.016746326242D-13
matrr     2025.07.21-09:17:13.2320000  -1.085633553532D-09  -5.205491163072D-09   2.883328053994D-12   5.205475125505D-09  -1.085637366810D-09  -1.292286310622D-11   1.191509603043D-14   2.653281601361D-15  -2.975785685017D-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