Table 1: Recent determinations of the angles between the ICRS and J2000.0.
Authors Method of $\Delta \epsilon_{0}$ $\Delta \psi $ $\Delta o$ a
  observation (mas) (mas) (mas)
Chapront et al. (2002) LLR $-5.36\pm0.10$ $-44.5\pm0.3$ $55.42\pm0.11$
Mathews et al. (2002) VLBI -6.8192 -41.775 -
a The angle $\Delta o$ is measured from the node of the ICRS with the mean ecliptic of J2000.0 to the origin of the ICRS. Thus, it has the oppositesign from that published in Chapront et al. (2002), which is measured in the opposite direction (see text for explanation).


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