  Photometric surveys of transNeptunian objects (TNOs) and Centaurs have
suggested possible correlations between some orbital parameters and surface
colors of classical objects, scattered disk objects (SDOs), and Centaurs.
However, larger sample sizes are needed in order to corroborate or rule out the
possible correlations and find some possible new ones. We use VLT-FORS images
through BVRI filters of 32 Kuiper Belt Objects (KBOs) and obtain their colors
after proper reduction and calibration. We study the possible correlations
merging these new measurements with the VLT published results from the ESO
large program and with the latest published results of the Meudon Multicolor
Survey via non-parametric statistical tests. We obtain a large dataset of 116
objects (classical, SDOs and Centaurs) and, in addition to confirming most of
the correlations and conclusions reached in the literature, some possible new
correlations are found. The most interesting ones are some correlations of
color vs. orbital parameters for the different dynamical groups. We find that
some correlations in the classical group, as well as the (dynamically) cold and
hot subgroups depend on the size of the objects. As a by-product of our study,
we were able to identify new candidates for light curve studies and found that
~55% of the objects showed variability above 0.15 mags. This is a higher value
than what is found in other studies. Since our sample contains smaller objects
than samples from other studies, this result might be an indication that the
smaller TNOs are more elongated than the larger ones.
