Numerical theory ERA-2005of rotation of the Deformable Earth with a Two-Layer Fluid Core (Celestial Mechanics, 2006, in press)

WRMS(mas) of fitting to GSFC series 1984-2005 of Celestial Pole offsets

dθ sinθ dψ ERA-2005 0.136 0.129 IAU 2000 0.172 0.165

Residuals dθ in the angle of nutation for theories

IAU 2000 (top) and ERA-2005 (bottom)

Residuals sin(θ) dψ in the angle of precession for theories IAU 2000 (top) and ERA-2005 (bottom)

Differences : ERA- 2005 minus IAU 2000

dθ

sin(θ) dψ

Observed and predicted corrections to IAU 2000

sin(θ) dψ

dθ

(2000-2009)

Observed and predicted corrections to IAU 2000 (1984-2019)

dψ

dθ

Experimental detection ofGeodetic Precession dΨ

GRT prediction: dΨ =1.9194“/cy

Observed value: dΨ =2.07(9)“/cy