Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.11.06-11:43:00.9970000   1.539276158D-06  rad 
e2        2025.11.06-11:43:00.9970000   8.091190419D-07  rad 
e3        2025.11.06-11:43:00.9970000   2.691637700D-03  rad 
e1r       2025.11.06-11:43:00.9970000  -6.889718138D-14  rad 
e2r       2025.11.06-11:43:00.9970000  -1.190618415D-13  rad 
e3r       2025.11.06-11:43:00.9970000   2.243111153D-13  rad 
e1rr      2025.11.06-11:43:00.9970000  -8.214068598D-19  rad 
e2rr      2025.11.06-11:43:00.9970000  -5.202756346D-20  rad 
e3rr      2025.11.06-11:43:00.9970000  -3.155325674D-18  rad 
utcmtai   2025.11.06-11:43:00.9970000  -37.0000000       s
ut1mtai   2025.11.06-11:43:00.9970000  -36.9116182       s
ut1rat    2025.11.06-11:43:00.9970000  -2.657730984D-04  s/day
lod       2025.11.06-11:43:00.9970000   2.643237931D-04  s
xpol      2025.11.06-11:43:00.9970000   0.166893         arcsec
ypol      2025.11.06-11:43:00.9970000   0.317498         arcsec
xpolr     2025.11.06-11:43:00.9970000  -2.121834326D-03  arcsec/d
ypolr     2025.11.06-11:43:00.9970000  -1.227835910D-03  arcsec/d
deps      2025.11.06-11:43:00.9970000    8.7217860       arcsec
dpsi      2025.11.06-11:43:00.9970000    2.5702018       arcsec
mat       2025.11.06-11:43:00.9970000  -7.522452836992D-01  -6.588803820353D-01   1.917112753900D-03   6.588783587271D-01  -7.522477258023D-01  -1.633225750211D-03   2.518244115476D-03   3.455773697184D-05   9.999968286211D-01
matr      2025.11.06-11:43:00.9970000   4.804616853966D-05  -5.485476996119D-05  -1.189834635943D-07   5.485459201413D-05   4.804631579824D-05  -1.397464488515D-07   5.117173829331D-11   1.134413472772D-10  -1.327836250863D-13
matrr     2025.11.06-11:43:00.9970000   4.000060000628D-09   3.503592627035D-09  -1.019101149244D-11  -3.503581888925D-09   4.000072978090D-09   8.676350373429D-12  -8.627649870827D-15   3.330298420378D-15   2.159609083985D-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