Analysis reveals orbital patterns and distributions of brown dwarfs near the Sun, suggesting their classification in galactic structure.
Based on the catalog ([5], $$r<10$$ pc from the Sun), a list of brown dwarfs (BDs) was compiled for which it was possible to find components of spatial coordinates and velocity ( $$n=13$$ ). Within the framework of the classical model of the Galaxy, numerical calculations of the orbits of BDs from our list were carried out. The distribution by orbital eccentricity (e) turned out to be on a narrow interval, which indicates a small spread in the ages of BDs. An exception is Gaia EDR3 ID 1589250088362827776, the kinematics of which ( $$e=4.1$$ ) indicates that it may belong to the halo. The distribution by Zₘₐₓ showed that the BDs from our list are part of the population of the ‘‘thin’’ disk with Zₘₐₓ<600 pc.
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Postnikova et al. (2025) studied this question.
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