This master’s thesis focuses on the study of trajectories of Y dwarfs. These objects are
the coldest and smallest stellar bodies not considered planets. A considerable amount
of the properties and characteristics of these Y dwarfs are still unknown. This is caused
by the fact that they barely emit visible light and they are also very faint in the infrared.
As an example, one of the stars in this work, WISE J0855-0714, is the eighth closest known
stellar object to the Sun and it was not known until 2014.
