No the estimate comes from the theory that most sun-like stars have their own kiuper belts, each with trillions of objects, and gravitational interactions will have millions of the lighter objects ejected every year. (I believe I read this in Sky & Telescope recently.) Our solar system also sheds millions of smaller kiuper belt objects every year. The objects ejected from a solar system remain in orbit around the galaxy center. They are sort of like large scale dust. Most comets come from the kiuper belt. Every time they come near the sun, they get risk getting a gravitational boost from Jupiter, the way Voyager did, and get ejected from the solar system. Earth has sent two space craft (three counting New Horizons) out of the solar system since 1979. In that time kiuper belt has shed millions of larger objects. The relative velocity of the solar system with respect to other nearby stars is several kilometers per second, with respect to the center of the galaxy about 200 km per second. Add that to any gravitational acceleration from the sun, and you get an object like Atlas.
No the estimate comes from the theory
—
Proves my point - its a theory and a statistical conclusion. No facts need apply.
I’m glad that you are smarter then all the dozens or hundreds of professional astronomers in the world who have observed the object with wonder and open minds - unlike you - and not dismissed it out of hand.
What would science do if every one approached things with a closed mind and dismissed everything as something ordinary? Would they ever learn anything? Likely not. And they would would they go on social media and places like FR and demonstrate to all just how truly close minded they are?