Curated Tumblr

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For preserving the least toxic and most culturally relevant Tumblr heritage posts.

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Luna (slrpnk.net)

submitted 5 months ago by [email protected] to c/curatedtumblr

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[–] [email protected] 1 points 5 months ago* (last edited 5 months ago)

There's currently no formal definition requiring that. By that definition, none of Pluto's five moons would be moons, since they all orbit the same barycenter.

There's a whole discussion about it here and it looks like it might be reconsidered in the future https://en.wikipedia.org/wiki/Charon_(moon)#Classification