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O.R. Hainaut, A.C. Delsanti (ESO)
We compiled a database of colors of Minor Bodies in the Outer Solar System (MBOSSes), i.e. Centaurs, Scattered TNOs, Plutinos, Cubiwanos and Comets), which now contains ~ 100 objects. Various statistical tests were applied to this dataset, in order to investigate for color trends as a function of orbital or physical parameters. We present the results of this investigation, which can be highlighted as following:
-- Plutinos and Cubiwanos with small orbital energy (defined as {\cal E}= \sqrt{e2+i2}, e and i being the eccentricity and the inclination, resp.) are on average slightly redder than those with a larger energy.
-- Plutinos and Cubiwanos with faint absolute magnitude have on average broader color distributions than those with a bright absolute magnitude.
-- Blue MBOSSes has a broader absolute magnitude distribution than the redder objects.
We will discuss possible interpretations of these and other results.