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Teeqoz said:


Well there is no set size limit for what constitutes a planet. A planet is a celestial body which:

*Orbits the sun

*Is not a satelite (moon)

*Has enough mass to assume a round shape

*Has cleared the neighbourhood around it's orbit.

And if I'm correct, Pluto fails at point 4.

But what function are you talking about?


By size i guess i meant mass lol. Idk what function astronomist care about, but i would guess the points you wrote there are pretty much what i meant, as it's not limited to mass but also categorize on seemingly more important points. What i meant is pretty similar to classifying books per theme and not alphabetical order for example.