• Zerush@lemmy.ml
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      1 month ago

      Correct, it’s called planet when it orbits arround the Sun AND has cleaned it’s orbit from asteroids, not the case of Pluto, whose orbit is still full of other objects, some even bigger than Pluto itself.

      If it orbits an Planet instead of the Sun, it’s a Moon, even if it is bigger than some other planets.

      • MinnesotaGoddam@lemmy.world
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        1 month ago

        when it orbits arround the Sun AND has cleaned it’s orbit from asteroid

        Jupiter, largest of all dwarf planets, shares its orbit with some i don’t know million asteroids.

        • ContriteErudite@lemmy.world
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          1 month ago

          I’ve often thought that ‘clearing’ it’s orbit is misleading. I believe the definition ought to be changed to ‘controls’ or ‘governs’ its orbit. This allows for objects in stable L4/L5 locations without inviting the caveats that ‘clearing’ needs.

      • nexguy@lemmy.world
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        1 month ago

        Jupiter has a permanent cloud of asteroids that follow it and neptune crosses the orbit of pluto so neither of those have cleared their orbits so of course they made exceptions so that their contrived definition fits.

      • FuglyDuck@lemmy.world
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        1 month ago

        Pluto is a dwarf planet, which is still a planet.

        Also, they absolutely should have just made an exception for Pluto so science teachers everywhere could have used that as a fun teaching point.

        • Small_Quasar@lemmy.world
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          1 month ago

          Considering it’s in a double tidally locked orbit with its own moon Charon and the point that both rotate around is outside Pluto’s volume I would argue that the Pluto/Charon system is actually a dwarf-binary-planet.

        • GraniteM@lemmy.world
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          1 month ago

          Also they shouldn’t have called the category of “things that aren’t planets despite being in some ways planet-like” “dwarf planet,” they should have called them “planetoids.” Star Trek had been referring to small planet-like objects as planetoids for decades, so the work in the popular consciousness had already been done. Dwarf planet not being a planet makes it sound like they’re saying dwarf people don’t count as people, and I don’t care for that at all.

        • nexguy@lemmy.world
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          1 month ago

          You would think this is the case but they specifically decided through a vote that a dwarf planet is NOT a planet but a completely separate type of object. The whole vote was ridiculous and done at the very end of the conference so that only a fraction of the members were there to vote on pluto.

          Edit: I’m down voted but every word of what I wrote is true. Dig into it and you will find out the same.