fossilesqueSep 3, 2025

Say hello to Bary

https://mander.xyz/post/37264929

Show threadessellSep 4, 2025

I believe that’s the same for every planet. And every moon. For every orbit.

Its just that the barycenter is inside the more massive object when one is much more massive than the other. Not that this makes much of a difference to anything.

Show threaddeadbeef79000

Correct.

I also believe that on of the criteria for a binary planet is that the barycenter is outside either body. Like Pluto/Charon.

Sep 4, 2025 at 12:41amWeb
Show threadmnemonicmonkeysSep 4, 2025
Don’t forget the other 3 bodies in the Pluto/Charon system
Show threadSpaceNoodleSep 4, 2025
Is that a problem?
Show thread9bananasSep 4, 2025

depends! do you wanna know how the system will evolve over long periods of time?

… then yes!

Show threadSpaceNoodleSep 4, 2025
So you’re saying it’s a Three-Body Problem
Show threadmnemonicmonkeysSep 4, 2025
Technically 5, but yes
Show threadpanda_abyssSep 4, 2025
I’ve always preached inclusivity and CC would welcome 3 more planets
Show threaddeadbeef79000Sep 4, 2025
I just can’t remember their names :-(
Show threadmnemonicmonkeysSep 4, 2025
Same. That’s why I was lazy and didn’t even mention them ;)
Show threadDenvilSep 4, 2025
The only one I remember is Styx cause I remember the river from mythology cause I thought it was cool. Not a damn clue what the others were.
Show threaddeadbeef79000Sep 4, 2025
Oh yeah! Also Nix and Hygea i think.