The Milky Way Galaxy has several smaller galaxies gravitationally bound to it, as part of the Milky Way subgroup. This subgroup is part of the local galaxy cluster, the Local Group.
A list of Milky Way's satellite galaxies include the following:
| Name (in distance) |
Diameter (ly) | Orbital radius (ly) |
Type | Discovered | |
|---|---|---|---|---|---|
| I | Canis Major Dwarf | - | 25,000 | Irr | 2003 |
| II | Sagittarius Dwarf | - | 81,000 | Irr | 1994 |
| III | LMC | - | 160,000 | Irr | prehistoric |
| IV | SMC | - | 190,000 | Irr | prehistoric |
| V | Ursa Major II Dwarf | - | 200,000 | - | 2006 |
| VI | Ursa Minor Dwarf | - | 205,500 | dE4 | 1954 |
| VII | Draco Dwarf | - | 248,000 | dE0 | 1954 |
| VIII | Sculptor Dwarf Galaxy | - | 254,000 | dE3 | 1937 |
| IX | Sextans Dwarf | - | 257,500 | dE3 | 1990 |
| X | Carina Dwarf | - | 283,500 | dE3 | 1977 |
| XI | Ursa Major I Dwarf | - | 330,000 | - | 2005 |
| XII | Fornax Dwarf | - | 427,000 | dE2 | 1938 |
| XIII | Leo II | - | 701,000 | dE0 | 1950 |
| XIV | Leo I | - | 890,000 | dE3 | 1950 |
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