Photometric colours of Minor Bodies in the Outer Solar System (MBOSS). This compilation is based on over 2000 measurement epoch extracted from over 100 articles, and is fairly complete as of Dec. 2011. The average colours and additional information are available in the first file. The second file lists the code of the references used for each object. The third file lists the actual references in bibTex format. The methods used to select the data and compute the averages are described in the accompanying paper. The updated lists are available online at http://www.eso.org/~ohainaut/MBOSS Average photometric colours of Minor Bodies in the Outer Solar System. The table also lists their physico-dynamical class, the number of measurement epochs included in the average, the absolute R-band magnitude R(1,1,{alpha}), and the slope of the spectroscopic gradient (in %/100nm). are presented in table2.dat. For each MBOSS from table2.dat, table3.dat list of the references from which photometric measurements were used. The table also lists the number of measurement epochs included in the average.