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[-] Live_your_lives@lemmy.world 10 points 3 months ago* (last edited 3 months ago)

I believe you are looking for hydrostatic equilibrium. There don't seem to be good answers for this online, but according to Robert Black on this Quora post:

There isn't a minimium per se but the generally accepted number for a mass to form into a sphere under its own gravity is 1/10,000th the mass of the Earth or 600 quintillion kg. As for size, it really depends on the composition of the body. The numbers are generally accepted to have a diameter of about 600km for a rocky body.

A quintillion is 1 x 10 to the 18th and Phobos has a mass of 1.0659 x 10 to the 16th kilograms and a diameter of 22 kilometers.

[-] MonkderVierte@lemmy.ml 1 points 3 months ago

Yes that, thanks!

this post was submitted on 04 Aug 2024
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