Small-bodies such as asteroids and comets display great variability in terms of surface morphological features. These are often unknown beforehand but can be employed for hazard avoidance during landing, autonomous planning of scientific observations, and navigation purposes. Algorithms performing these tasks are often data-driven, which means they require realistic, sizeable, and annotated datasets which in turn may rely heavily on human intervention. This work develops a methodology to generate synthetic, automatically-labeled datasets which are used in conjunction with real, manually-labeled ones to train deep-learning architectures