B Can an object have too little mass to have a stable orbit?

AI Thread Summary
An object cannot be too light to achieve a stable orbit due to the principle that gravitational acceleration is independent of mass. Even very light objects, like a feather, can theoretically orbit a larger body such as the sun. The discussion references a comment from a physics professor about small objects in the asteroid belt, suggesting that other factors may influence orbital stability. It's important to clarify these concepts with the professor for a better understanding. Overall, mass alone does not prevent an object from obtaining a stable orbit.
josh0196
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I was wondering, since gravitational atttraction is determinated by m1 * m2 / d2 * G , can an object have a mass too little to have a stable orbit, for instance, around the sun?

P.S: I'm new to this forum! Hello!
 
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josh0196 said:
...since gravitational atttraction is ...
How does this suggest unstable orbits for small masses?
 
A.T. said:
How does this suggest unstable orbits for small masses?

Wow, that's a fast reply :)

Yeah, I didn't express myself very well... I meant, can an very "light" object achieve an orbit around another bigger planet? For example a feather around the sun?
This question comes from something that my physics professor said: "the asteroid belt is formed of objects so little that alone could not achieve orbit around the sun"

I'm not from a English speaking country so excuse me if I mess up some terms and stuff.
 
The acceleration of an object from gravity is independent of mass, so no, there are no objects so light that they couldn't achieve a stable orbit. However it is possible that your professor was speaking of some other effect. I'd ask them about it.
 
Drakkith said:
The acceleration of an object from gravity is independent of mass, so no, there are no objects so light that they couldn't achieve a stable orbit. However it is possible that your professor was speaking of some other effect. I'd ask them about it.
Thank you :)
I'll ask him then.
 
I am following someone on Youtube who has built a rocket shaped (4 proprllers) drone for the world speed record ... He was having problems with internal heat from electical control gear and battery inside the sealed rocket (about 1kw waste heat) Speed is 500km/hr , I suggested a 4mm hole in the tip of the nose and 8mm hole at rear which should alow sufficient air cooling .. I said this will increase thrust because the air exiting is hotter .. a bit similar to a ram jet ... was I correct...

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