Network Earth Rotation Service

Earth rotation parameters now

The table is refreshed every 10 seconds

Parameter TAI time                      Value            Dimension
e1        2025.08.02-10:01:18.8780000   2.065933442D-06  rad 
e2        2025.08.02-10:01:18.8780000   1.030578428D-06  rad 
e3        2025.08.02-10:01:18.8780000   2.693480471D-03  rad 
e1r       2025.08.02-10:01:18.8780000  -3.745240117D-14  rad 
e2r       2025.08.02-10:01:18.8780000   8.849809908D-14  rad 
e3r       2025.08.02-10:01:18.8780000  -7.024398021D-13  rad 
e1rr      2025.08.02-10:01:18.8780000   3.613421131D-21  rad 
e2rr      2025.08.02-10:01:18.8780000  -5.980172735D-20  rad 
e3rr      2025.08.02-10:01:18.8780000  -1.945906598D-18  rad 
utcmtai   2025.08.02-10:01:18.8780000  -37.0000000       s
ut1mtai   2025.08.02-10:01:18.8780000  -36.9368889       s
ut1rat    2025.08.02-10:01:18.8780000   8.322797664D-04  s/day
lod       2025.08.02-10:01:18.8780000  -8.277412051D-04  s
xpol      2025.08.02-10:01:18.8780000   0.212572         arcsec
ypol      2025.08.02-10:01:18.8780000   0.426129         arcsec
xpolr     2025.08.02-10:01:18.8780000   1.577149338D-03  arcsec/d
ypolr     2025.08.02-10:01:18.8780000  -6.674497003D-04  arcsec/d
deps      2025.08.02-10:01:18.8780000    8.8432771       arcsec
dpsi      2025.08.02-10:01:18.8780000    3.7137529       arcsec
mat       2025.08.02-10:01:18.8780000  -1.925308581137D-01   9.812908181515D-01   4.459659319792D-04  -9.812877564383D-01  -1.925313715474D-01   2.451537137783D-03   2.491533316211D-03   3.437563999505D-05   9.999968955352D-01
matr      2025.08.02-10:01:18.8780000  -7.155663334948D-05  -1.403960942131D-05   1.789218754392D-07   1.403957218181D-05  -7.155685699155D-05  -3.244191729789D-08   1.064150319354D-10  -1.350009001094D-10  -2.604966638692D-13
matrr     2025.08.02-10:01:18.8780000   1.023781772533D-09  -5.218008452987D-09  -2.365457191539D-12   5.217992144305D-09   1.023784487437D-09  -1.304736599587D-11   9.728615928974D-15   7.485650280244D-15  -2.452612304316D-17

Back

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.

Back to the Network Earth Rotation Service

This page was prepared by Leonid Petrov ()
Last update: 2017.07.05_12:12:16