The number of satellite galaxies connected to the Milky Way and to the Andromeda galaxy respectively, are comparable in number to the number of planets, dwarf planets, moons, and large asteroids in the solar system.
Sadly, the preprint does not have an indexed table listing all of them and their properties, although it does analyze the properties of these satellite galaxies from a variety of perspectives. But, Wikipedia does have a list of satellite galaxies for the Milky Way, and for the Andromeda galaxy.
At the time of writing, there are 88 confirmed satellite galaxies in the LG [i.e the Local Group] (49 in the MW [i.e. the Milky Way galaxy] and 39 in M31 [i.e. the Andromeda galaxy]) and a further 15 candidate galaxies (14 in the MW and 1 in M31).
From Amandine Doliva-Dolinsky, Michelle L. M. Collins, Nicolas F. Martin, "The satellite galaxies of the Milky Way and Andromeda" arXiv:2502.06948 (February 10, 2025) (to be published as a chapter in the forthcoming Encyclopedia of Astrophysics).
The abstract of the pre-print states:
The satellite galaxies of the Local Group provide us with an important probe of galaxy formation, evolution, and cosmology. The two large spirals that dominate this group -- the Milky Way and Andromeda -- are each host to tens of satellites, ranging in stellar mass from M∗=3×109M⊙ down to as little as M∗∼1000M⊙. In this review, we (1) provide an overview of the known satellite population of the Milky Way and Andromeda, including how they are discovered and their observed properties; (2) discuss their importance in understanding the nature of dark matter, star formation in the early Universe, the assembly histories of their massive hosts, and the impact of reionisation on the lowest mass galaxies; and (3) highlight the coming revolution and challenges of this field as new observatories and facilities come online. In the coming decades, the study of Local Group satellites should allow us to place competitive constraints on both dark matter and galaxy evolution.
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