Reports Of The Iau Working Group On Cartographic Coordinates And Rotational Elements: 2006 & 2009 (Vol 98, Pg 155, 2007)

The primary poles for (243) Ida and (134340) Pluto and its satellite (134340) Pluto : I Charon were redefined in the IAU Working Group on Cartographic Coordinates and Rotational Elements (WGCCRE) 2006 report (Seidelmann et al. in Celest Mech Dyn Astr 98:155, 2007), and 2009 report (Archinal et al. in Celest Mech Dyn Astr 109:101, 2011), respectively, to be consistent with the primary poles of similar Solar System bodies. However, the WGCCRE failed to take into account the effect of the redefinition of the poles on the values of the rotation angle W at J2000.0. The revised relationships in Table 3 of Archinal et al. 2011) areW = 274 degrees.05 + 1864 degrees.6280070 d for (243) Ida, W = 302 degrees.695 + 56 degrees.3625225 d for (134340) Pluto, and W = 122 degrees.695 + 56 degrees.3625225 d for (134340) Pluto : I Charonwhere d is the time in TDB days from J2000.0 (JD2451545.0).