this post was submitted on 26 Apr 2024
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It's not the size that counts but the ability to clear your orbit. ;)
So tell me about Jupiter
Good question! I had forgotten about Jupiter's Trojans and Greek asteroids!
I went and checked the definiton of Clearing the Neighborhood by IAU, emphasis mine:
Trojans and Greeks orbit Jupiter's LaGrange points in a stable orbit and so they are governed by Jupiter's gravity. You could say they're really weird moons orbiting semi-stable points Jupiter creates.
So since there are like 95 moons (as of last Feb) of jupiter, I'm calling out a dwarf planet
this condition makes "planetness" into a local condition. so theoretically, we can throw enough junk into space and stop anything we want from being a planet.
pluto just got unlucky in terms of the amount of trash it has in its way. its not fair :(
No, because if it's a proper planet it will clear its orbit.
Bad astronomy and fake news below please ignore me.
~~also Pluto lovers should note that orbital dominance takes longer the farther out you are, due to the size of the orbit itself and the sheer amount of time it takes to make a trip around, limiting interactions with neighbors.~~
~~Pluto will eventually own it's orbit and whatever species has inherited the earth by then may decide to grant it full planet status again!~~
Well, only if we move the Earth safely outwards of the huge Sun.
You made me curious about the timeframe and it turns out I had it completely wrong.
Pluto's lack of orbital dominance is a matter of size not time, it's already had the required time it's just too wee to get it done. Pluto will never be a full planet!
By the time the Plutians invade they can have Earth