Anton Petrov's new video Another Satellite Collided in Space, But Everyone Missed It Until Now (below) is fun to watch, and links to Jonathan McDowell's tweet string which begins
Space-Track catalog updated today with a note for object 48078, 1996-051Q: "Collided with satellite".
This is a new kind of comment entry - haven't seen such a comment for any other satellites before. Let's look a bit closer:
Then Johnathan McDowell's August 15, 2021 tweet
37 debris objects (green) have been cataloged so far from the breakup - there are likely to be more. This looks to be the first major confirmed orbital collision in a decade.
Nevertheless it appears that the Yunhai satellite is still under control and able to make orbit adjustments (blue dots) so the collision was not catastrophic?
show a cluster of green squiggly lines from April through August 2021 that seem to be somehow associated with a conjunction event involving Yunahi-1.
What are these green squiggly lines? What do they mean?