What's the minimum size a celestial body has to be to have orbiting rings?

[The_real_cal_howard]

Like Saturn does, for example.

I'm asking because planet Pop Star from Kirby has a moon like this, and it's confirmed by WoG to be giant, so if their moon can have a large estimated size, the size of Pop Star may be even bigger, which would upgrade Kirby's fodder.

 

[Antoniofer]

Minor planets and moons have rings, so isn't something that directly relate to mass/density/gravity.

 

[Akreious]

Technically, in Astronomy, rings aren't a measurement of size or density. It depends on how heavy the ring is. Our moon technically has ring(s), although it's not really visible. It also is a matter of circumstance; some Celestial Bodies simply have more "Material" to make rings out of when compared to say, a planet that's in a sort of "Deadzone" with no real meteor-activity

 

[The_real_cal_howard]

@Antoniofer. Only partly. Centaurs, the only minor planets/moons with rings, have to be tidally disrupted by a giant planet, and the others (Pluto, Rhea) have been disproven. The only minor planet with a definite ring is Haumea.

Semantics on my part, as you're right with the second sentence.

 

[The_real_cal_howard]

@Akr.

First, thanks for responding (both of you). Second, the ring is visible from the lower atmosphere.

 

[Antoniofer]

As long there's is a planet/moon/celestial body that proof that can have rings without the requeriment of being dense/heavy, then the point stands. If there's any theory that can indicate that a planet needs to be x heavy (don't think that its need to be dense considering that Saturn is made of gas), there's nothing that we can do.