EOP C04 COMBINED SERIES  
Interactive EOP selection | Interactive plot | Interactive Analysis | C04 - Individual series
Page updated on 2020, June 28

EOP Combined Serie C04 consistent with ITRF 2014:
  • Updates
  • Final values for the period extending to 30 days back with respect to now. The last 30 days values are no more shown since December 1 2011.
  • Solution from 1962 until the last month : Daily EOP combined series C04 14 (recomputed from 1984 according to improved algorithm), fully consistent with ITRF 2014, officially replacing former 08 C04 since February 9 2017, and updated two times per week -

2 versions according to the precession-nutation models:
Graphics:
  • VLBI, GPS, SLR & DORIS operational series compared to C04 for the passed 365 days. Bias & standard deviation
  • Plot of the polar motion/LOD/UT1 2009-current week with 30 days prediction (up-dated two times per week)

What is new :
  • UT1 and celestial pole offsets constrained by IVS combined solution
  • Polar motion consistent with International Reference Frame ITRF 2008

Technical note



INTERACTIVE SEARCH FOR EOP C04  
1962- one month back - More details on C04 series








Remove tidal variations1


ΔLOD / date 2
Δω3 / date 3
Starting date Ending date
Year

Month

Day

 Year
 Month
 Day

    




INTERACTIVE PLOT FOR EOP C04  
Make plot : select type and span Description of C04 series




Dimension du graphe :
X


cm

Remove tidal variations1


ΔLOD / date 2
Δω3 / date 3
Starting date Ending date
Year

Month

Day

 Year
Month
 Day
Label in french
Label in english

    



1- Variations produced by the solid Earth zonal tides (IERS 2000 model)
2- Length of day refered to 86400 s TAI
3- Earth angular velocity refered to the nominal value of 72921151.467064 picorad/s