Also, its been observed that pieces colliding together can be thrown into a higher orbit. Or more accurately, a more elliptic orbit with a much higher apogee than it had before. That means a Kessler Syndrome event in a lower orbit could start a chain reaction in higher orbits.
Also immediately obvious was the high
susceptibility of the fragment to solar radiation
pressure, demonstrated by rapid and dramatic
changes in its orbit. From an initial orbit of
about 1365 km by 1445 km with an inclination
of 74 degrees, the fragment’s perigee began to
decrease while its apogee increased. Within
four weeks the orbit had been perturbed into
one of 750 km by 1895 km. At this point,
atmospheric drag became the dominant factor,
causing the object to reenter the atmosphere a
little more than two weeks later on 3 June (see
figure). Thus, the fragment existed for only 43
days, despite originating in an orbit from which
decay normally requires thousands of years.
Good news is that they won’t last very long in orbit doing since the perigee is lowered. However, having so many fragments all at once would probably be very bad.
Also, its been observed that pieces colliding together can be thrown into a higher orbit. Or more accurately, a more elliptic orbit with a much higher apogee than it had before. That means a Kessler Syndrome event in a lower orbit could start a chain reaction in higher orbits.
https://orbitaldebris.jsc.nasa.gov/quarterly-news/pdfs/ODQNv7i3.pdf
Good news is that they won’t last very long in orbit doing since the perigee is lowered. However, having so many fragments all at once would probably be very bad.