Passus-1

Passus-1
Passus-1 was a relatively stable system until about 2 million years ago. At that point, a hyper-velocity star passed only 700 AU away. It passed quickly, and within a few hundred years, the threat had passed, as the star was around 2 light years away. However, in the 10 or so years it was close to the system, it wreaked havoc on it. About 200 years before its closest encounter, it sent comets tumbling out of Passus-1's Oort Cloud. Some of the asteroids and comets residing there were captured by the star, and were sent flying at around the same speed toward Passus-1. At this point, the star was about magnitude -5. However, less than a century later, it was approaching quickly and was about as bright as a full moon. The fastest comets and asteroids arrived at around this time. At closest approach, the star destroyed the stable orbits of Passus-1's planets. Some asteroids and comets arrived with the star as well. An asteroid event happened around every 5 years on Passus-1's planets. Fast forwarding to around 100,000 years later, a huge influx of comets and asteroids appeared. They bombarded the planets, melting their crusts. Overhead, the sky would've been spectacular, looking generally as through it had 7 or 8 Hale-Bopp-like comets. 20 or so 'new stars' would be visible, which would really be asteroids. Smaller, dimmer comets would also been seen. Passus-1 would have developed a thin ring of debris around it made up of broken down asteroids and comets. Meteor storms would've appeared weekly. Though nearly all of the fast comets and asteroids that had appeared roughly 100,000 years earlier would have passed by the system quickly, the slower debris would have been captured into orbit or slung into a hyperbole. However, over long periods of time, these often eccentric and tilted orbits would not be stable unless they were very far away. Outgassing would propel the comets in different directions, accelerating or decelerating them. Of course, gravitational pushes and pulls from the planets would drastically change their orbits. For the closer asteroids and comets, they might pass close to a planet, which would slingshot them into a new orbit, or rarely, capture them. Passus-1's light would slowly push all debris outward.