Pluto-charon shouldn’t count since it is more akin to a binary planetary system than a planet-moon system. Charon and Pluto are so close in size that the system has a barycenter outside of Pluto. This means instead of Charon orbiting a point inside Pluto, Charon and Pluto orbit a point about 800 km above Pluto’s surface.
Comment on xkcd #2908: Moon Armor Index
Tomassci@sh.itjust.works 8 months ago
Finally, Earth is Number One again (well Number Two if you count Pluto, that is)
teft@lemmy.world 8 months ago
Everythingispenguins@lemmy.world 8 months ago
That was why we told pluto it couldn’t be in the club anymore.