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The correct planet criteria are, IMHO: - not a star - not orbiting a planet - roundish - greater than 1000km radius That would restore Pluto to its rightfu
by baggy_trough 2mo ago
The correct planet criteria are, IMHO:
- not a star
- not orbiting a planet
- roundish
- greater than 1000km radius
That would restore Pluto to its rightful place and add Eris.
- orwin 2mo agoWhy 1000 km radius? I know that 1000k diameter might be important for cold bodies to keep their equilibrium, but what does 1000km radius give? Because honestly anybody who played stuff like KSP RSS or any space game taking place in our solar system represented at scale with adequat orbit weirdness probably told themselves "that's Pluto? Ok i get it, not a planet".
- baggy_trough 2mo agoIt's just a nice round number to use as a clear boundary.
- Aachen 2mo agoWhy not just have it be rounded under its own gravity? Collapse two rules into one. If nice round systems with clear boundaries is what you're going for
- baggy_trough 2mo agoYou still have to have some subjective number to decide how round something has to be, and it admits too many small objects.