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Network Earth Rotation Service: Earth rotation parameters now


The table is refreshed every 10 seconds
Parameter TAI time                      Value            Dimension
e1        2026.02.25-01:58:14.0000000   1.876880722D-06  rad 
e2        2026.02.25-01:58:14.0000000   5.186143395D-07  rad 
e3        2026.02.25-01:58:14.0000000   2.693237953D-03  rad 
e1r       2026.02.25-01:58:14.0000000   2.208079228D-14  rad 
e2r       2026.02.25-01:58:14.0000000  -4.032851763D-14  rad 
e3r       2026.02.25-01:58:14.0000000  -1.274842072D-13  rad 
e1rr      2026.02.25-01:58:14.0000000  -4.143934010D-20  rad 
e2rr      2026.02.25-01:58:14.0000000  -2.533046806D-19  rad 
e3rr      2026.02.25-01:58:14.0000000  -1.446007164D-18  rad 
utcmtai   2026.02.25-01:58:14.0000000  -37.0000000       s
ut1mtai   2026.02.25-01:58:14.0000000  -36.9335632       s
ut1rat    2026.02.25-01:58:14.0000000   1.510485679D-04  s/day
lod       2026.02.25-01:58:14.0000000  -1.502248747D-04  s
xpol      2026.02.25-01:58:14.0000000   0.106972         arcsec
ypol      2026.02.25-01:58:14.0000000   0.387134         arcsec
xpolr     2026.02.25-01:58:14.0000000  -7.187057749D-04  arcsec/d
ypolr     2026.02.25-01:58:14.0000000   3.935079655D-04  arcsec/d
deps      2026.02.25-01:58:14.0000000    8.8070684       arcsec
dpsi      2026.02.25-01:58:14.0000000    6.8690878       arcsec
mat       2026.02.25-01:58:14.0000000  -9.975347438941D-01  -7.012793263787D-02   2.551036658448D-03   7.012778886303D-02  -9.975380052657D-01  -1.458754610328D-04   2.554985964133D-03   3.338271950371D-05   9.999967354608D-01
matr      2026.02.25-01:58:14.0000000   5.113799466562D-06  -7.274161981552D-05  -1.049502324937D-08   7.274138208938D-05   5.113809588204D-06  -1.859884915516D-07   1.395054525903D-10   4.593508924031D-11  -3.579690803712D-13
matrr     2026.02.25-01:58:14.0000000   5.304385327954D-09   3.729049073838D-10  -1.356258551746D-11  -3.729041704098D-10   5.304402663417D-09   7.648723255570D-13  -3.398858442750D-15   9.730676293188D-15   8.337694500709D-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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Last update: 2025.10.01_14:25:31