<p>I don't think such an intermediate state exists for very long. Once you shred the moon, it's shredded and the particles orbit on locally Keplerian orbits.<br>
This would look like Saturns rings, which are also well inside the planet's Roche limit.</p>

<p>The intermediate state you propose to name would have to form either<br>
a) a steaty state of in some dynamic variable or<br>
b) have a sufficiently long lifetime (which would be your job to prove)<br>
in order to earn its own name.</p>

<hr>

<p>Edit: As OP has asked for material on ring spreading, I can point to <a href="http://adsabs.harvard.edu/abs/2012Sci...338.1196C" rel="nofollow noreferrer">A. Crida's work</a> who had a bit of a controversial idea about the origin of the gas giant moons. However his calculations involve also classical calculations of collisional disc spreading.</p>

CC BY-SA 3.0
2018-03-06T11:32:36.963Z
Yes I agree the question is how long a debris lasts until it forms a ring. But then again that process could take a substantially long period of time
Dan
CC BY-SA 3.0
2018-03-06T11:39:33.623Z
@Dan [citation needed] Why would you think so? I can imagine that the radial spreading of material takes some time. In that case one would simply distinguish between a narrow and a wide ring, or something along those lines.
AtmosphericPrisonEscape
CC BY-SA 3.0
2018-03-06T11:46:30.293Z
However I would point out that yourself have said that an intermediate stage must exist. The step from disintegration to planetary ring cannot be instantaneous. A relatively small body, say of 50kms in diameter would take a substantial amount of time to disperse into a ring surely? Plus all the fragments would stay in the same orbit only gradually dispersing?
Dan
CC BY-SA 3.0
2018-03-06T11:57:08.123Z
@Dan Well, "A relatively small body, say of 50kms in diameter would take a substantial amount of time to disperse into a ring surely?" is where you need a source on. Also substantial compared to what? You can't let human intuition guide you in that. With the second statement I agree, as there are works on ring spreading. If you're interested I can update my answer with that.
AtmosphericPrisonEscape
CC BY-SA 3.0
2018-03-06T11:05:51.323Z
2018-03-06T12:37:29.957Z
2018-03-06T12:37:29.957Z
AtmosphericPrisonEscape
<p>As a body of a suitable size and mass moves within the Roche limit of a planet, it will disintegrate. This will form a debris field that will eventually form a planetary ring. Is there a name given to this debris field before it forms a ring? Something like a Roche train or Roche field seem appropriate but I can't find any reference to such</p>

CC BY-SA 3.0
2018-03-06T10:54:20.307Z
Thanks for your reply kozaky!  In the absence of any 'official' name I would like to propose a 'Roche hose'
Dan
<planetary-ring>
What is a debris field called before it becomes a planetary ring?
Dan
# What is a debris field called before it becomes a planetary ring?

(Asked by: username_0 on 2018-03-06)

As a body of a suitable size and mass moves within the Roche limit of a planet, it will disintegrate. This will form a debris field that will eventually form a planetary ring. Is there a name given to this debris field before it forms a ring? Something like a Roche train or Roche field seem appropriate but I can't find any reference to such

**Tags:** planetary-ring
> **Comments:**
> **username_0**: Thanks for your reply kozaky!  In the absence of any 'official' name I would like to propose a 'Roche hose'  

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## 1 answers

### Answer by username_1 on 2018-03-06. Score: 1

I don't think such an intermediate state exists for very long. Once you shred the moon, it's shredded and the particles orbit on locally Keplerian orbits.  
This would look like Saturns rings, which are also well inside the planet's Roche limit.

The intermediate state you propose to name would have to form either  
a) a steaty state of in some dynamic variable or  
b) have a sufficiently long lifetime (which would be your job to prove)  
in order to earn its own name.

---

Edit: As OP has asked for material on ring spreading, I can point to [A. Crida's work](http://adsabs.harvard.edu/abs/2012Sci...338.1196C) who had a bit of a controversial idea about the origin of the gas giant moons. However his calculations involve also classical calculations of collisional disc spreading.

> **Comments:**
> **username_0**: Yes I agree the question is how long a debris lasts until it forms a ring. But then again that process could take a substantially long period of time  
> **username_1**: @Dan [citation needed] Why would you think so? I can imagine that the radial spreading of material takes some time. In that case one would simply distinguish between a narrow and a wide ring, or something along those lines.  
> **username_0**: However I would point out that yourself have said that an intermediate stage must exist. The step from disintegration to planetary ring cannot be instantaneous. A relatively small body, say of 50kms in diameter would take a substantial amount of time to disperse into a ring surely? Plus all the fragments would stay in the same orbit only gradually dispersing?  
> **username_1**: @Dan Well, "A relatively small body, say of 50kms in diameter would take a substantial amount of time to disperse into a ring surely?" is where you need a source on. Also substantial compared to what? You can't let human intuition guide you in that. With the second statement I agree, as there are works on ring spreading. If you're interested I can update my answer with that.  

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