Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds 
Parameter TAI time                      Value            Dimension
e1        2025.06.18-20:54:12.3200000   2.148545720D-06  rad 
e2        2025.06.18-20:54:12.3200000   6.903013358D-07  rad 
e3        2025.06.18-20:54:12.3200000   2.695525863D-03  rad 
e1r       2025.06.18-20:54:12.3200000   1.988609777D-14  rad 
e2r       2025.06.18-20:54:12.3200000   1.263679044D-13  rad 
e3r       2025.06.18-20:54:12.3200000   1.070317619D-13  rad 
e1rr      2025.06.18-20:54:12.3200000   6.323110556D-20  rad 
e2rr      2025.06.18-20:54:12.3200000   2.099739267D-19  rad 
e3rr      2025.06.18-20:54:12.3200000   6.065755128D-19  rad 
utcmtai   2025.06.18-20:54:12.3200000  -37.0000000       s
ut1mtai   2025.06.18-20:54:12.3200000  -36.9649383       s
ut1rat    2025.06.18-20:54:12.3200000  -1.268156638D-04  s/day
lod       2025.06.18-20:54:12.3200000   1.261241167D-04  s
xpol      2025.06.18-20:54:12.3200000   0.142385         arcsec
ypol      2025.06.18-20:54:12.3200000   0.443169         arcsec
xpolr     2025.06.18-20:54:12.3200000   2.252037713D-03  arcsec/d
ypolr     2025.06.18-20:54:12.3200000   3.543957018D-04  arcsec/d
deps      2025.06.18-20:54:12.3200000    8.5870865       arcsec
dpsi      2025.06.18-20:54:12.3200000    1.9105887       arcsec
mat       2025.06.18-20:54:12.3200000  -7.613387458326D-01  -6.483514993626D-01   1.909808457487D-03   6.483495688958D-01  -7.613411404615D-01  -1.582514908370D-03   2.480041662692D-03   3.339357448545D-05   9.999969241344D-01
matr      2025.06.18-20:54:12.3200000   4.727839762956D-05  -5.551787275816D-05  -1.152408303435D-07   5.551769826625D-05   4.727853801126D-05  -1.392162760136D-07   8.840565691298D-11   1.398511296617D-10  -2.239205300488D-13
matrr     2025.06.18-20:54:12.3200000   4.048414505146D-09   3.447605427869D-09  -1.015187181973D-11  -3.447595191182D-09   4.048427229439D-09   8.403440445714D-12  -1.019898648258D-14   6.366501441049D-15   2.505403716859D-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