Juno: New Origins | how can i get the mass of a planet using only radius and density?

this isn't for vizzy, just normal calculations for my planet building shenanigans
i need to have the mass of the celestial body so i can use mass and radius for the gravity using a calculator i've found (idk if the calculator is accurate, but if it isn't and you have a better one, then please tell me)
the radius is given, and for density i can just look up the average composition and density of similar celestial bodies and base it off of that
so yeah, how get mass from those two values

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10.7k RudimentaryCheezit

yeah XD

+0 2.7 years ago
27.3k Zenithspeed

yeah, school always overexxagerated planets by saying "they're egg/lemon/potato shaped" even tho it's like a few kilometer difference so for any normal person it'd just be spherical if viewed from space
@SamTheFox

+0 2.7 years ago
10.7k RudimentaryCheezit

@Toinkove @Zenithspeed
in real life, all the planets are slight oblate spheres

thankfully, we don't have to worry about that in simplerockets 2 :D

+0 2.7 years ago
27.3k Zenithspeed

i'll try one of those, thanks
@Toinkove

+0 2.7 years ago
10.7k RudimentaryCheezit

i think you can get the volume by this:

volume = (planet’s radius x 2) cubed

+1 2.7 years ago
27.3k Zenithspeed

can you give the calculation to get volume from radius?
@Toinkove

+0 2.7 years ago

No Upvotes

how can i get the mass of a planet using only radius and density?

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6 Comments

volume = (planet’s radius x 2) cubed

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