This is a much better explanation for the anomalies of Oumuamua. turns out trhat a cloud of duct can do the job and it also tells us that the solar acceleration would separate this cloud from any more massive objects as well.
These would be small and dark and soon separated.
Nice spur to the imagination though and there must be lots of this out there..
Oumuamua as a Cloud of Debris Explains Anomalies
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February 2, 2019
A NASA JPL researcher has calculated that Oumuamua was
probably a cloud of debris and not an interstellar space sail fragment.
There was a Harvard research theory that Oumuamua was an interstellar
space sail fragment. The new JPL analysis is simpler and explains other
observations and is consistent with the way other dwarf comets break
apart.
Oumuamua had a lot of anomalies in its orbit and path through the
solar system. It had to be an interstellar object because it was moving a
speed that is beyond the solar system escape velocity. This means it
could not have had an orbit within our solar system.
Oumuamua had an acceleration which would not be a Keplerian orbit.
This acceleration was 30 standard deviations beyond a regular
measurement error for a large and heavy object.
Oumuamua could not be a large and heavy object because solar
radiation would not be able to make such a large object move in that
way. It could not have been outgassing because if outgassing caused the
movement it would have been highly visible.
This means Oumuamua was not a regular large comet.
Oumuamua Was a Small Comet, It Broke Apart and then Became a Cloud of Debris
Here is the evidence and reason that Oumuamua started as a dwarf comet that was too small to survive getting close to the sun.
Although it is unknown how bright ‘Oumuamua was when approaching
perihelion from interstellar space, it certainly was much fainter than
required by Bortle’s survival limit. An estimate is provided by its
failure to show up in the images taken with the Pan-STARRS telescope on
June 17–22, 2017 (Micheli et al. 2018), when the object was at a
heliocentric distance of 2.18 AU. Assuming the telescope’s limiting
magnitude of ∼21, the absolute magnitude of ‘Oumuamua could not be
brighter than ∼18, suggesting that the object fits the category of dwarf
comets.
Oumuamua was missed on the way to perihelion because of its intrinsic
faintness, more than 9 magnitude below the survival limit, it has since
the very beginning been a perfect candidate for disintegration by
virtue of its short perihelion distance. If so, the post-perihelion
observations refer not to the object that had entered the inner Solar
System, but to its debris.
In the absence of any sign of outgassing, the size of the solar acceleration implies a very high surface-area-to-mass ratio. This means it was a monstrous, extremely fluffy aggregate of loosely-bound dust grains.
10 tons of Space Dust Cloud
If we model it as a very irregularly shaped and devolatilized
fluffy aggregate of loosely-bound dust grains, of extremely high
porosity and ten million grams (10 tons) in mass (Sekanina & Kracht
2018), this model of ‘Oumuamua provides an opportunity to consistently
explain its nongravitational acceleration as an effect of solar
radiation pressure and to emphasize a chance that a number of its
observed properties, including the lack of activity, tumbling, radiation
pressure effect, and the inferred appearance, morphology, and elongated
shape are of recent origin, not inherent to the object that was
entering the inner Solar System in early 2017.
The rest of the parent dwarf comet’s debris was not observed after perihelion. The other pieces were too dark.
New work indicates that there are thousands of interstellar objects
that have been captured in our solar system. If there are interstellar
aliens with a technology that leaves a lot of junk, then it is possible
that the gravity of our solar system has captured pieces of their
civilization. This would be like coke bottles washing up on beaches or
the plastic patch in the Pacific Ocean.
Currently, the most likely situation we are observing is that there
are a lot of different sized rocks and dust and some of them behave in
unusual ways.
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