Smallest known sperical body?
2007-01-09 21:44:37 · 4 answers · asked by Ritch 3 in Science & Mathematics ➔ Astronomy & Space
This depends on a number of things:
1) how spherical do you want it to be? No planet is a perfect sphere. Smaller planetoids are bumpier than large ones.
2) what's it made from? A droplet of water in interplanetary space will become spherical through surface tension, and then freeze.
Basically, for rock, the answer is "around 30 km to make an approximately spherical planetoid or moon". Check out Phobos, a moon of mars. It's 22 km diameter. Spherical, or not spherical?
2007-01-10 02:23:58 · answer #1 · answered by cosmo 7 · 0⤊ 0⤋
This depends on the density of the body in question. for example a black hole as a diameter of zero which would be your smallest object that is spherical under its own gravity.
2007-01-10 05:50:09 · answer #2 · answered by Mark G 7 · 0⤊ 0⤋
It depend on the material it is made of.
I guess dust balls a few inches across, if not disturbed,could accumulate in a ball because of gravity acting on them.
2007-01-10 06:39:57 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋
depends upon its composition
2007-01-10 05:49:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋