Saturday's Toutatis from the Challenger

I'm not too confident on the plate solves here.  I don't know why.  I took measurements 
from a common star in each of the following images, which might explain why it seems 
that the asteroid is moving around.  I don't know if these are within acceptible 
tolerances.  What do you think about these variances?



        Pointing  Asteroid  Asteroid  Asteroid      Asteroid      Common        Common
Image#  Method    CursorX   CursorY   RA            DEC           Star RA       Star DEC
------  ------    -------   -------   -----------   -----------   -----------   -----------
018     cursor    403       242       20 25 34.67   -20 01 03.0   20 25 46.44   -19 59 19.7
        centroid  399.166   243.166   20 25 34.67   -20 01 01.4

019     cursor    358       239       20 25 34.74   -20 01 03.6   20 25 46.58   -19 59 20.4
        centroid  358.000   237.000   20 25 34.98   -20 01 06.1

012     cursor    379       235       20 25 34.91   -20 01 03.5   20 25 46.61   -19 59 19.7
        centroid  378.146   234.722   20 25 34.84   -20 01 03.7

024     cursor    401       249       20 25 34.22   -20 01 04.1   20 25 46.56   -19 59 19.4
        centroid  400.745   248.872   20 25 34.22   -20 01 04.3

025     cursor    350       245       20 25 34.22   -20 01 06.1   20 25 46.57   -19 59 19.9
        centroid  349.000   245.000   20 25 34.14   -20 01 06.0

026     cursor    400       254       20 25 34.31   -20 01 01.4   20 25 46.45   -19 59 19.3
        centroid  400.000   254.000   20 25 34.31   -20 01 01.4

028     cursor    381       249       20 25 34.15   -20 01 06.1   20 25 46.56   -19 59 19.4
        centroid  380.302   249.059   20 25 34.10   -20 01 06.0

014     cursor    387       238       20 25 34.91   -20 01 02.9   20 25 46.56   -19 59 20.5
        centroid  386.510   237.793   20 25 34.87   -20 01 03.1

015     cursor    390       239       20 25 34.90   -20 01 01.6   20 25 46.53   -19 59 20.3
        centroid  389.912   238.942   20 25 34.89   -20 01 01.7