Slope parameter vs. albedo relations for 111 TNOs, including 2013 AZ₆₀ and 2012 DR₃₀. Data (except for these two latter objects) have been taken from Lacerda et al. (2014). The blue and red dots indicate the two major groups identified by Lacerda et al. (2014), black points represent ambiguous objects (due to their large respective uncertainties), while green and yellow dots show the large bodies and Haumea-type surfaces, respectively. The isolated purple square shows the place of 2013 AZ₆₀ at the very left side of the diagram. The other purple square indicates 2012 DR₃₀, just in between of the dark neutral (blue) and bright red (red) object groups.