Table 1:
Recent determinations of the angles between the ICRS and J2000.0.
Authors
Method of
a
observation
(mas)
(mas)
(mas)
Chapront et al. (2002)
LLR
Mathews et al. (2002)
VLBI
-6.8192
-41.775
-
a The angle
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).